ASTROSAT CZTI

Data Quality Report

Orbit 30351

Creation date: 2024-06-27T20:14:06.262457
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/AS1A10_053T15_9000004364_30351cztM0_level2.evt modeM0/AS1A10_053T15_9000004364_30351cztM0_level2_quad_clean.evt
Size (bytes)541,336,32083,373,120
Size516.3 MB 79.5 MB
Events in quadrant A3,288,573533,241
Events in quadrant B5,011,829533,921
Events in quadrant C3,457,829499,872
Events in quadrant D4,197,731506,247

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138462
B0196142
C0141762
D0165462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469781.205751%
B64691171.808626%
C64692764.266502%
D64691422.195084%

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 7559 6469 1 1 0.01% 0.02%
B 7559 6469 0 0 0.00% 0.00%
C 7559 6469 1 1 0.01% 0.02%
D 7559 6469 82 82 1.08% 1.27%

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 8 192 19578 111.76 847 833 167.7
A 13 254 12455 69.29 847 833 167.7
A 3 137 8317 44.62 847 833 167.7
B 6 159 1728432 11018.26 831 812 156.8
B 12 111 19212 117.35 831 812 156.8
B 11 111 17908 109.03 831 812 156.8
C 14 238 185475 1008.9 790 795 183.1
C 3 233 84537 457.48 790 795 183.1
C 14 254 78262 423.2 790 795 183.1
D 13 104 639630 3264.25 811 792 195.7
D 2 250 281494 1434.29 811 792 195.7
D 8 195 105149 533.23 811 792 195.7

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