ASTROSAT CZTI

Data Quality Report

Orbit 25279

Creation date: 2024-06-27T19:15:50.533845
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/AS1A09_006T01_9000003700_25279cztM0_level2.evt modeM0/AS1A09_006T01_9000003700_25279cztM0_level2_quad_clean.evt
Size (bytes)714,254,40095,417,280
Size681.2 MB 91.0 MB
Events in quadrant A3,416,222626,839
Events in quadrant B4,793,127600,753
Events in quadrant C3,936,835591,955
Events in quadrant D8,986,514555,955

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150140
B0190430
C0163390
D0319340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7377330.447336%
B73784816.519382%
C73781692.290594%
D73776789.190728%

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 7842 7378 2 2 0.03% 0.03%
B 7843 7379 298 298 3.80% 4.04%
C 7842 7378 83 83 1.06% 1.12%
D 7842 7378 587 587 7.49% 7.96%

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 11189 57.31 884 866 180.1
A 13 170 8728 43.65 884 866 180.1
A 3 137 7994 39.57 884 866 180.1
B 3 64 1418324 8624.3 852 831 164.4
B 3 112 21375 124.99 852 831 164.4
B 12 111 20106 117.27 852 831 164.4
C 0 239 526745 2683.34 831 836 196.0
C 14 238 131847 668.46 831 836 196.0
C 3 233 21618 106.04 831 836 196.0
D 8 195 3658471 18013.68 826 799 203.0
D 1 52 2149298 10581.15 826 799 203.0
D 2 234 33476 160.93 826 799 203.0

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