ASTROSAT CZTI

Data Quality Report

Orbit 34391

Creation date: 2022-02-06T19:51:11.970751
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A05_085T01_9000004910_34391cztM0_level2.evt modeM0/AS1A05_085T01_9000004910_34391cztM0_level2_quad_clean.evt
Size (bytes)582,079,680103,415,040
Size555.1 MB 98.6 MB
Events in quadrant A2,824,544738,016
Events in quadrant B4,256,062707,075
Events in quadrant C2,995,048721,046
Events in quadrant D7,172,997573,097

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119863
B0163132
C0123372
D0251172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5606230.410275%
B56065189.240100%
C5606430.767035%
D5606138524.705672%

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 7488 5607 14 14 0.19% 0.25%
B 7488 5607 387 387 5.17% 6.90%
C 7488 5607 29 29 0.39% 0.52%
D 7488 5607 1341 1341 17.91% 23.92%

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 9 143 49014 342.28 707 697 141.2
A 10 83 34324 238.22 707 697 141.2
A 13 254 10751 71.22 707 697 141.2
B 5 172 1439089 11256.44 674 659 127.8
B 0 190 72571 562.75 674 659 127.8
B 5 200 21122 160.13 674 659 127.8
C 15 214 235975 1518.95 670 676 154.9
C 0 10 112256 720.29 670 676 154.9
C 14 67 20281 126.56 670 676 154.9
D 7 223 2241232 15605.49 591 578 143.6
D 12 235 819962 5706.77 591 578 143.6
D 8 195 583359 4058.9 591 578 143.6

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