ASTROSAT CZTI

Data Quality Report

Orbit 58793

Creation date: 2026-08-10T02:12:31.991983
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_106T01_9000006596_58793cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58793cztM0_level2_quad_clean.evt
Size (bytes)670,109,760100,103,040
Size639.1 MB 95.5 MB
Events in quadrant A3,639,118709,642
Events in quadrant B3,878,676751,646
Events in quadrant C3,626,550680,747
Events in quadrant D13,090,239376,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161160
B0167920
C0161361
D0438830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7355410.557444%
B73551271.726717%
C7355470.639021%
D7355331445.057784%

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 7355 7355 27 27 0.37% 0.37%
B 7355 7355 72 72 0.98% 0.98%
C 7355 7355 48 48 0.65% 0.65%
D 7354 7354 3214 3214 43.70% 43.70%

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 15 233 205156 1019.65 807 784 200.4
A 10 251 76016 375.35 807 784 200.4
A 13 248 55034 270.66 807 784 200.4
B 4 171 251760 1476.09 797 769 170.0
B 4 158 142610 834.17 797 769 170.0
B 0 157 54367 315.21 797 769 170.0
C 6 223 218118 1009.57 786 779 215.3
C 13 3 96578 445.0 786 779 215.3
C 12 249 60016 275.16 786 779 215.3
D 12 110 5468623 29916.8 634 606 182.8
D 11 129 4755981 26017.77 634 606 182.8
D 12 248 55155 298.45 634 606 182.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct