ASTROSAT CZTI

Data Quality Report

Orbit 55523

Creation date: 2026-01-02T11:49:39.415129
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_099T01_9000006536_55523cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55523cztM0_level2_quad_clean.evt
Size (bytes)475,963,200105,338,880
Size453.9 MB 100.5 MB
Events in quadrant A3,327,454702,588
Events in quadrant B4,556,492715,657
Events in quadrant C3,734,547656,799
Events in quadrant D5,419,218594,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156590
B0191790
C0169020
D0214030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7470250.334672%
B74703845.140562%
C74711041.392049%
D74714936.598849%

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 7470 7470 20 20 0.27% 0.27%
B 7470 7470 296 296 3.96% 3.96%
C 7471 7471 87 87 1.16% 1.16%
D 7471 7471 446 446 5.97% 5.97%

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 0 8 96499 489.36 785 763 195.6
A 3 14 41331 207.36 785 763 195.6
A 4 205 37900 189.83 785 763 195.6
B 4 156 1079140 6658.81 759 732 162.0
B 0 171 120963 742.39 759 732 162.0
B 10 247 109440 671.24 759 732 162.0
C 13 3 245836 1178.93 762 753 207.9
C 9 38 210923 1010.99 762 753 207.9
C 10 19 80284 382.57 762 753 207.9
D 11 129 1730812 8151.46 747 714 212.2
D 2 153 150027 703.5 747 714 212.2
D 2 249 119993 561.99 747 714 212.2

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