ASTROSAT CZTI

Data Quality Report

Orbit 34732

Creation date: 2022-03-03T10:29:37.168314
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/AS1C07_001T01_9000004982_34732cztM0_level2.evt modeM0/AS1C07_001T01_9000004982_34732cztM0_level2_quad_clean.evt
Size (bytes)518,624,64083,969,280
Size494.6 MB 80.1 MB
Events in quadrant A2,913,654544,544
Events in quadrant B2,948,154546,109
Events in quadrant C2,998,824541,043
Events in quadrant D6,444,260496,912

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126313
B0125652
C0124132
D0233772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5928150.253036%
B5928490.826586%
C5928350.590418%
D592868911.622807%

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 7211 5929 3 3 0.04% 0.05%
B 7211 5929 27 27 0.37% 0.46%
C 7211 5929 23 23 0.32% 0.39%
D 7211 5929 572 572 7.93% 9.65%

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 15 169 138075 1009.43 679 665 136.1
A 10 83 51536 373.7 679 665 136.1
A 7 48 32976 237.36 679 665 136.1
B 5 172 139697 1075.67 674 655 129.3
B 15 85 40477 308.07 674 655 129.3
B 10 245 27627 208.66 674 655 129.3
C 15 214 253745 1641.9 658 662 154.1
C 0 10 142081 917.47 658 662 154.1
C 14 67 23467 147.95 658 662 154.1
D 8 195 1189227 7001.78 634 620 169.8
D 1 20 705111 4149.98 634 620 169.8
D 2 250 676835 3983.41 634 620 169.8

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