ASTROSAT CZTI

Data Quality Report

Orbit 21195

Creation date: 2024-06-27T18:24:48.476562
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/AS1A06_002T01_9000003134_21195cztM0_level2.evt modeM0/AS1A06_002T01_9000003134_21195cztM0_level2_quad_clean.evt
Size (bytes)600,540,48087,114,240
Size572.7 MB 83.1 MB
Events in quadrant A3,865,603539,386
Events in quadrant B3,859,303549,146
Events in quadrant C3,745,281527,348
Events in quadrant D6,197,787488,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165032
B0164232
C0161682
D0235712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76631361.774762%
B76641892.466075%
C76632112.753491%
D76636708.743312%

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 7833 7666 4 4 0.05% 0.05%
B 7834 7667 15 15 0.19% 0.20%
C 7833 7665 0 0 0.00% 0.00%
D 7833 7665 487 487 6.22% 6.35%

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 13 252 214405 1117.31 935 915 191.1
A 11 47 37684 192.43 935 915 191.1
A 13 254 11895 57.46 935 915 191.1
B 3 64 88800 478.82 937 913 183.5
B 0 197 26165 137.58 937 913 183.5
B 0 190 25470 133.79 937 913 183.5
C 14 238 138797 645.04 897 901 213.8
C 3 233 105010 486.99 897 901 213.8
C 13 61 6389 25.67 897 901 213.8
D 7 238 1300022 6132.99 870 843 211.8
D 1 20 698691 3294.3 870 843 211.8
D 12 235 246767 1160.92 870 843 211.8

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