ASTROSAT CZTI

Data Quality Report

Orbit 20220911_A07_093T23_9000005340_level2

Creation date: 2026-01-05T07:07:39.378659
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/AS1A07_093T23_9000005340cztM0_level2.fits modeM0/AS1A07_093T23_9000005340cztM0_level2_quad_clean.evt
Size (bytes)69,891,84060,413,760
Size66.7 MB 57.6 MB
Events in quadrant A436,284355,068
Events in quadrant B413,686356,851
Events in quadrant C419,264332,847
Events in quadrant D350,278286,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153270
B0159460
C0149240
D0197130

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7142130.182022%
B71421682.352282%
C7142230.322039%
D71424896.846822%

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 11146 7139 0 0 0.00% 0.00%
B 11147 7118 0 0 0.00% 0.00%
C 11147 7140 0 0 0.00% 0.00%
D 11146 7065 0 0 0.00% 0.00%

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 29 376 8.81 114 107 30.5
A 9 19 365 8.45 114 107 30.5
A 0 30 357 8.18 114 107 30.5
B 2 9 346 10.2 109 105 23.6
B 14 254 314 8.85 109 105 23.6
B 2 8 300 8.26 109 105 23.6
C 1 81 354 8.36 110 104 29.9
C 1 80 322 7.29 110 104 29.9
C 3 234 310 6.89 110 104 29.9
D 6 62 289 7.0 100 92 28.2
D 4 160 264 6.11 100 92 28.2
D 10 189 263 6.07 100 92 28.2

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