ASTROSAT CZTI

Data Quality Report

Orbit 20860

Creation date: 2024-06-27T18:20:27.588530
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/AS1A05_160T01_9000003078_20860cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20860cztM0_level2_quad_clean.evt
Size (bytes)546,589,44070,292,160
Size521.3 MB 67.0 MB
Events in quadrant A3,363,435430,626
Events in quadrant B3,446,956439,502
Events in quadrant C3,429,044403,179
Events in quadrant D5,871,376399,523

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137352
B0138872
C0138542
D0216282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65341251.913070%
B65341372.096725%
C65341742.662994%
D65342193.351699%

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 7504 6535 0 0 0.00% 0.00%
B 7504 6535 0 0 0.00% 0.00%
C 7504 6535 29 29 0.39% 0.44%
D 7504 6535 53 53 0.71% 0.81%

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 0 226 7555 38.27 875 858 175.0
A 3 137 7115 35.75 875 858 175.0
A 12 194 6151 30.25 875 858 175.0
B 0 230 24045 140.6 866 845 165.0
B 12 111 20199 117.29 866 845 165.0
B 11 111 17711 102.21 866 845 165.0
C 14 238 128825 674.64 815 823 189.7
C 0 10 81370 424.53 815 823 189.7
C 7 247 32164 165.19 815 823 189.7
D 1 239 2343089 11613.25 837 817 201.7
D 1 52 115055 566.4 837 817 201.7
D 5 222 96814 475.96 837 817 201.7

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