ASTROSAT CZTI

Data Quality Report

Orbit 31956

Creation date: 2024-06-27T20:34:32.029422
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/AS1C06_002T04_9000004660_31956cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31956cztM0_level2_quad_clean.evt
Size (bytes)1,722,672,000264,798,720
Size1.6 GB 252.5 MB
Events in quadrant A8,610,3441,813,121
Events in quadrant B15,065,3971,715,466
Events in quadrant C13,818,8881,626,433
Events in quadrant D13,465,0101,623,720

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039624
B039830
C039725
D039723

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400452803
B0636215468
C0573183991
D0570354359

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0322
C0311
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18127700.386164%
B177929005.058453%
C18023191310.614215%
D1793611836.595674%

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 23313 18614 1 1 0.00% 0.01%
B 23313 18393 444 444 1.90% 2.41%
C 23320 18537 197 197 0.84% 1.06%
D 23316 18454 952 952 4.08% 5.16%

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 13 170 60097 132.58 2197 2152 437.1
A 14 238 40070 86.76 2197 2152 437.1
A 13 254 34493 74.0 2197 2152 437.1
B 6 159 4971509 12713.32 2089 2038 390.9
B 12 18 800289 2042.15 2089 2038 390.9
B 5 172 462425 1177.8 2089 2038 390.9
C 3 233 4677458 9964.58 2005 2014 469.2
C 0 10 628590 1335.39 2005 2014 469.2
C 14 238 451881 958.78 2005 2014 469.2
D 8 195 1920858 3917.2 2050 1992 489.9
D 13 249 1679259 3424.0 2050 1992 489.9
D 12 218 857821 1747.1 2050 1992 489.9

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