ASTROSAT CZTI

Data Quality Report

Orbit 20200829_A09_145T01_9000003848_level2

Creation date: 2021-01-08T21:53:30.743214
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_145T01_9000003848cztM0_level2_bc.evt modeM0/AS1A09_145T01_9000003848cztM0_level2_quad_clean.evt
Size (bytes)23,118,664,3206,877,503,360
Size21.5 GB 6.4 GB
Events in quadrant A125,452,26945,399,632
Events in quadrant B150,563,09445,161,274
Events in quadrant C121,901,35643,693,761
Events in quadrant D268,924,35440,498,224

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010764370
B012041430
C010884860
D016603680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099880
B099920
C099900
D099860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49011964191.309682%
B490178179993.671931%
C490183105292.147973%
D4900746246012.745014%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 620159 490462 204 204 0.03% 0.04%
B 620159 490459 1715 1715 0.28% 0.35%
C 620159 490533 289 289 0.05% 0.06%
D 620159 490083 12707 12707 2.05% 2.59%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 13195536 2081.32 28652 28222 6326.4
A 13 254 781038 119.0 28652 28222 6326.4
A 13 170 622917 94.0 28652 28222 6326.4
B 0 189 29010778 5333.62 28306 27872 5434.0
B 10 245 4779789 874.48 28306 27872 5434.0
B 3 112 2136484 388.04 28306 27872 5434.0
C 3 233 7586421 1161.13 27234 27321 6510.1
C 1 0 3912698 596.82 27234 27321 6510.1
C 15 208 2733229 415.65 27234 27321 6510.1
D 7 80 75561156 11052.95 26124 25419 6834.0
D 1 52 70706217 10342.54 26124 25419 6834.0
D 2 250 11036104 1611.17 26124 25419 6834.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter