ASTROSAT CZTI

Data Quality Report

Orbit 31832

Creation date: 2024-06-27T20:33:17.260410
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_109T01_9000004646_31832cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31832cztM0_level2_quad_clean.evt
Size (bytes)924,004,800193,285,440
Size881.2 MB 184.3 MB
Events in quadrant A5,386,1891,342,404
Events in quadrant B7,906,6981,323,746
Events in quadrant C7,044,7541,256,573
Events in quadrant D6,974,7161,242,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02020
B02020
C02020
D02020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220322
B0304484
C0277732
D0273972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A99582282.289616%
B99573713.726022%
C99587017.039566%
D99582482.490460%

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 12533 9960 0 0 0.00% 0.00%
B 12532 9959 3 3 0.02% 0.03%
C 12533 9960 161 161 1.28% 1.62%
D 12533 9960 49 49 0.39% 0.49%

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 13 254 17505 58.61 1393 1371 275.2
A 3 137 12847 41.69 1393 1371 275.2
A 0 226 11928 38.35 1393 1371 275.2
B 6 159 2548687 10063.72 1353 1322 253.1
B 12 111 29444 111.1 1353 1322 253.1
B 11 111 27537 103.57 1353 1322 253.1
C 0 10 844308 2799.35 1307 1322 301.1
C 3 233 792142 2626.12 1307 1322 301.1
C 14 238 231559 764.56 1307 1322 301.1
D 8 195 1326964 4192.47 1353 1324 316.2
D 12 218 140676 440.71 1353 1324 316.2
D 12 233 107359 335.35 1353 1324 316.2

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