ASTROSAT CZTI

Data Quality Report

Orbit 21180

Creation date: 2024-06-27T18:24:31.192650
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_062T01_9000003132_21180cztM0_level2.evt modeM0/AS1A05_062T01_9000003132_21180cztM0_level2_quad_clean.evt
Size (bytes)725,765,760103,884,480
Size692.1 MB 99.1 MB
Events in quadrant A4,226,135653,804
Events in quadrant B4,244,776671,126
Events in quadrant C4,070,846650,707
Events in quadrant D8,870,353586,827

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182312
B0180722
C0175152
D0322113

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83981872.226721%
B83991331.583522%
C83991461.738302%
D839893411.121696%

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 9538 8400 65 65 0.68% 0.77%
B 9539 8401 2 2 0.02% 0.02%
C 9539 8400 3 3 0.03% 0.04%
D 9538 8400 770 770 8.07% 9.17%

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 5 16 313237 1524.19 1009 985 204.9
A 13 254 13001 58.65 1009 985 204.9
A 10 229 11206 49.89 1009 985 204.9
B 0 182 85546 434.09 1019 994 194.8
B 0 190 58715 296.34 1019 994 194.8
B 0 229 29335 145.5 1019 994 194.8
C 14 238 151033 654.06 975 980 229.4
C 3 233 96660 417.06 975 980 229.4
C 8 128 12788 51.47 975 980 229.4
D 7 238 2679532 11533.93 952 924 232.2
D 1 239 1194441 5139.21 952 924 232.2
D 1 52 972584 4183.91 952 924 232.2

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