ASTROSAT CZTI

Data Quality Report

Orbit 58391

Creation date: 2026-07-14T01:25:44.364961
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_045T01_9000006590_58391cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58391cztM0_level2_quad_clean.evt
Size (bytes)507,813,12096,860,160
Size484.3 MB 92.4 MB
Events in quadrant A3,509,466646,092
Events in quadrant B4,119,708681,117
Events in quadrant C3,252,172621,537
Events in quadrant D7,384,869507,266

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151841
B0169961
C0145941
D0267261

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6840450.657895%
B68402203.216374%
C6840310.453216%
D6840105415.409357%

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 7680 6841 28 28 0.36% 0.41%
B 7680 6841 120 120 1.56% 1.75%
C 7680 6841 25 25 0.33% 0.37%
D 7680 6841 1076 1076 14.01% 15.73%

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 2 143 139762 753.95 739 720 184.4
A 4 249 112363 605.38 739 720 184.4
A 3 244 77733 417.6 739 720 184.4
B 5 172 366979 2346.71 727 700 156.1
B 0 153 172603 1101.36 727 700 156.1
B 6 255 150277 958.32 727 700 156.1
C 15 230 128985 641.69 722 714 199.9
C 4 5 93328 463.31 722 714 199.9
C 14 245 72489 359.06 722 714 199.9
D 5 113 3780043 19172.81 685 653 197.1
D 2 249 308922 1563.85 685 653 197.1
D 11 129 302442 1530.97 685 653 197.1

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