ASTROSAT CZTI

Data Quality Report

Orbit 55711

Creation date: 2026-01-15T09:54:43.630931
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_099T04_9000006540_55711cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55711cztM0_level2_quad_clean.evt
Size (bytes)636,523,20093,012,480
Size607.0 MB 88.7 MB
Events in quadrant A8,699,312488,526
Events in quadrant B3,227,216696,384
Events in quadrant C4,130,035636,130
Events in quadrant D6,954,125501,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307280
B0150130
C0177910
D0256500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7095207429.231853%
B70962603.664036%
C70962423.410372%
D7096129118.193348%

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 7094 7094 1671 1671 23.56% 23.56%
B 7095 7095 3 3 0.04% 0.04%
C 7095 7095 164 164 2.31% 2.31%
D 7095 7095 1102 1102 15.53% 15.53%

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 32 5322310 32748.77 660 643 162.5
A 12 115 426565 2621.06 660 643 162.5
A 0 8 123395 755.4 660 643 162.5
B 7 0 83119 497.91 764 733 165.5
B 7 252 33047 195.29 764 733 165.5
B 0 173 24441 143.28 764 733 165.5
C 6 223 793784 3871.09 749 741 204.9
C 13 3 142103 690.03 749 741 204.9
C 14 96 97893 474.23 749 741 204.9
D 11 129 3313744 17236.7 678 647 192.2
D 10 181 447353 2324.03 678 647 192.2
D 8 245 373823 1941.48 678 647 192.2

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