ASTROSAT CZTI

Data Quality Report

Orbit 57596

Creation date: 2026-05-21T13:13:19.386773
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/AS1A14_070T08_9000006576_57596cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57596cztM0_level2_quad_clean.evt
Size (bytes)446,696,64098,902,080
Size426.0 MB 94.3 MB
Events in quadrant A3,472,290660,734
Events in quadrant B3,190,648715,211
Events in quadrant C4,943,953609,738
Events in quadrant D4,431,648563,322

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144722
B0138562
C0190002
D0175702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6391490.766703%
B6391620.970114%
C63914206.571742%
D63914046.321389%

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 7601 6392 9 9 0.12% 0.14%
B 7601 6392 21 21 0.28% 0.33%
C 7601 6392 324 324 4.26% 5.07%
D 7601 6392 351 351 4.62% 5.49%

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 3 14 575818 3243.44 717 700 177.3
A 7 160 35325 195.27 717 700 177.3
A 10 251 31554 174.0 717 700 177.3
B 0 63 111500 739.33 710 684 149.9
B 10 247 47579 312.87 710 684 149.9
B 7 252 35097 229.59 710 684 149.9
C 15 224 1935309 10283.24 688 683 188.1
C 14 254 162008 857.5 688 683 188.1
C 12 252 64575 339.61 688 683 188.1
D 15 142 1223075 6387.32 677 643 191.4
D 8 160 191707 998.33 677 643 191.4
D 2 249 123204 640.39 677 643 191.4

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