ASTROSAT CZTI

Data Quality Report

Orbit 57407

Creation date: 2026-05-08T19:41:42.308889
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_102T01_9000006572_57407cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57407cztM0_level2_quad_clean.evt
Size (bytes)524,010,24089,910,720
Size499.7 MB 85.7 MB
Events in quadrant A6,662,399594,172
Events in quadrant B3,275,917642,637
Events in quadrant C5,734,367518,063
Events in quadrant D3,253,361542,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240541
B0141211
C0212981
D0140041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60822624.307793%
B6082931.529102%
C608181113.336622%
D60821171.923709%

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 7212 6082 11 11 0.15% 0.18%
B 7212 6083 13 13 0.18% 0.21%
C 7211 6082 645 645 8.94% 10.61%
D 7212 6083 55 55 0.76% 0.90%

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 12 4072442 24905.22 659 642 163.5
A 4 3 13315 77.51 659 642 163.5
A 3 14 11696 67.61 659 642 163.5
B 0 216 340485 2413.44 654 630 140.8
B 5 185 127003 897.42 654 630 140.8
B 0 245 64322 452.3 654 630 140.8
C 15 224 3058378 18421.79 603 598 166.0
C 14 254 139353 835.94 603 598 166.0
C 6 223 54693 325.9 603 598 166.0
D 2 249 177654 988.4 643 615 179.1
D 8 240 124459 691.41 643 615 179.1
D 15 142 85925 476.28 643 615 179.1

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