ASTROSAT CZTI

Data Quality Report

Orbit 53503

Creation date: 2025-08-19T03:05:59.833381
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_002T07_9000006498_53503cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53503cztM0_level2_quad_clean.evt
Size (bytes)1,078,439,04098,740,800
Size1.0 GB 94.2 MB
Events in quadrant A9,831,282689,895
Events in quadrant B7,875,267754,295
Events in quadrant C17,023,826256,142
Events in quadrant D4,552,575716,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349642
B0290292
C0562127
D0194362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8242165820.116477%
B8243155418.852360%
C8242577070.007280%
D82421882.281000%

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 9082 8244 1169 1169 12.87% 14.18%
B 9083 8244 855 855 9.41% 10.37%
C 9082 8244 4939 4939 54.38% 59.91%
D 9082 8244 142 142 1.56% 1.72%

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 63 3049788 14366.59 863 839 212.2
A 3 62 2918996 13750.3 863 839 212.2
A 15 174 357915 1682.53 863 839 212.2
B 4 206 2843328 15354.89 867 835 185.1
B 4 171 932322 5031.81 867 835 185.1
B 10 28 273985 1475.53 867 835 185.1
C 7 64 11517365 78779.68 535 530 146.2
C 12 254 1618271 11065.98 535 530 146.2
C 1 241 1017666 6957.61 535 530 146.2
D 7 110 221843 862.69 907 867 256.1
D 2 120 204999 796.93 907 867 256.1
D 2 249 87786 339.33 907 867 256.1

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