ASTROSAT CZTI

Data Quality Report

Orbit 55943

Creation date: 2026-02-05T16:03:59.380194
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_066T02_9000006546_55943cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55943cztM0_level2_quad_clean.evt
Size (bytes)400,985,280103,852,800
Size382.4 MB 99.0 MB
Events in quadrant A3,273,723676,936
Events in quadrant B3,194,988720,546
Events in quadrant C3,938,457631,292
Events in quadrant D3,871,876611,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152241
B0151001
C0171051
D0168531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7245520.717736%
B7245781.076605%
C72452032.801932%
D7245741.021394%

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 7865 7246 5 5 0.06% 0.07%
B 7865 7246 9 9 0.11% 0.12%
C 7865 7246 142 142 1.81% 1.96%
D 7865 7246 62 62 0.79% 0.86%

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 194712 1027.88 770 751 188.7
A 8 249 30819 159.34 770 751 188.7
A 4 3 25564 131.49 770 751 188.7
B 9 251 43795 258.67 763 734 166.5
B 0 216 39679 233.94 763 734 166.5
B 4 21 21261 123.3 763 734 166.5
C 12 252 435922 2133.28 743 738 204.0
C 15 199 226864 1108.47 743 738 204.0
C 13 3 184391 900.27 743 738 204.0
D 11 129 400251 1885.23 746 714 211.9
D 2 31 116751 547.52 746 714 211.9
D 3 12 110172 516.48 746 714 211.9

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