ASTROSAT CZTI

Data Quality Report

Orbit 54823

Creation date: 2025-11-15T23:22:41.751465
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_039T06_9000006526_54823cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54823cztM0_level2_quad_clean.evt
Size (bytes)450,866,88092,062,080
Size430.0 MB 87.8 MB
Events in quadrant A2,843,028621,143
Events in quadrant B3,426,105652,943
Events in quadrant C3,738,115583,003
Events in quadrant D6,178,168478,940

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133931
B0149031
C0155871
D0229941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480791.219136%
B64801862.870370%
C64801442.222222%
D6479103916.036425%

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 7490 6481 3 3 0.04% 0.05%
B 7490 6481 57 57 0.76% 0.88%
C 7490 6481 80 80 1.07% 1.23%
D 7489 6480 1023 1023 13.66% 15.79%

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 21833 120.68 705 688 175.2
A 4 3 14950 81.4 705 688 175.2
A 13 254 14936 81.32 705 688 175.2
B 5 185 336697 2285.97 686 661 147.0
B 2 249 236775 1606.23 686 661 147.0
B 10 247 110490 747.14 686 661 147.0
C 12 252 426239 2282.7 681 677 186.4
C 13 3 282781 1513.2 681 677 186.4
C 4 5 159059 849.56 681 677 186.4
D 2 172 1857493 10009.0 658 630 185.5
D 1 31 499326 2688.11 658 630 185.5
D 11 129 367328 1976.6 658 630 185.5

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