ASTROSAT CZTI

Data Quality Report

Orbit 37326

Creation date: 2024-06-27T21:38:29.650204
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/AS1A11_030T02_9000005310_37326cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37326cztM0_level2_quad_clean.evt
Size (bytes)1,003,898,880148,032,000
Size957.4 MB 141.2 MB
Events in quadrant A5,793,573971,613
Events in quadrant B5,666,464980,321
Events in quadrant C7,839,515931,924
Events in quadrant D10,365,879842,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241084
B0240843
C0301013
D0382163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A109121111.017229%
B109122131.951979%
C109126926.341642%
D10912180416.532258%

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 15060 10915 45 45 0.30% 0.41%
B 15060 10915 126 126 0.84% 1.15%
C 15060 10915 607 607 4.03% 5.56%
D 15060 10914 1548 1548 10.28% 14.18%

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 10 83 514134 2057.36 1236 1214 249.3
A 13 248 155900 620.46 1236 1214 249.3
A 15 237 150922 600.49 1236 1214 249.3
B 5 172 385304 1623.94 1224 1189 236.5
B 12 18 150227 630.1 1224 1189 236.5
B 0 190 112913 472.34 1224 1189 236.5
C 1 23 2114471 7637.19 1178 1184 276.7
C 14 254 468139 1687.52 1178 1184 276.7
C 15 214 445599 1606.07 1178 1184 276.7
D 2 249 2320891 8411.03 1121 1090 275.8
D 12 227 1619824 5869.13 1121 1090 275.8
D 13 249 1057458 3830.13 1121 1090 275.8

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