ASTROSAT CZTI

Data Quality Report

Orbit 58101

Creation date: 2026-06-24T13:42:17.028889
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_042T02_9000006586_58101cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58101cztM0_level2_quad_clean.evt
Size (bytes)691,093,44092,122,560
Size659.1 MB 87.9 MB
Events in quadrant A3,263,386664,850
Events in quadrant B8,416,931584,520
Events in quadrant C3,640,767633,488
Events in quadrant D9,725,684424,656

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146323
B0299242
C0156442
D0336282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6907821.187201%
B6907152922.136963%
C6907901.303026%
D6907220431.909657%

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 7822 6907 18 18 0.23% 0.26%
B 7822 6907 890 890 11.38% 12.89%
C 7822 6907 39 39 0.50% 0.56%
D 7821 6906 2147 2147 27.45% 31.09%

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 10 251 185800 975.42 776 756 189.7
A 3 245 34205 176.32 776 756 189.7
A 11 3 12968 64.37 776 756 189.7
B 10 128 3800192 24862.54 716 689 152.8
B 5 172 1351886 8841.73 716 689 152.8
B 5 185 209730 1367.89 716 689 152.8
C 12 252 467955 2285.24 753 746 204.4
C 6 223 90187 437.48 753 746 204.4
C 15 208 84610 410.2 753 746 204.4
D 12 110 5146911 26926.49 674 645 191.1
D 3 224 798086 4172.4 674 645 191.1
D 7 222 408995 2136.58 674 645 191.1

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