ASTROSAT CZTI

Data Quality Report

Orbit 05682

Creation date: 2024-06-27T14:57:54.821687
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/AS1A02_077T01_9000000732_05682cztM0_level2.evt modeM0/AS1A02_077T01_9000000732_05682cztM0_level2_quad_clean.evt
Size (bytes)652,219,20098,395,200
Size622.0 MB 93.8 MB
Events in quadrant A4,356,063604,021
Events in quadrant B5,393,198572,451
Events in quadrant C4,349,471603,853
Events in quadrant D5,021,441554,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282698564
B03335411072
C0282768613
D03407912525

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027572
B027688
C027474
D027580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082
B081
C081
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9409920.977787%
B91392132.330671%
C9395730.777009%
D90481301.436782%

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 14312 11204 17 17 0.12% 0.15%
B 14306 10997 50 50 0.35% 0.45%
C 14308 11213 16 16 0.11% 0.14%
D 14304 10897 64 64 0.45% 0.59%

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 0 50 145423 642.18 1081 1055 224.8
A 15 174 26673 113.95 1081 1055 224.8
A 0 226 10796 43.33 1081 1055 224.8
B 15 204 474367 2285.65 1060 1033 207.1
B 5 172 295120 1420.09 1060 1033 207.1
B 0 219 164183 787.82 1060 1033 207.1
C 5 250 108707 441.53 1046 1051 243.8
C 1 16 88304 357.85 1046 1051 243.8
C 3 9 28307 111.79 1046 1051 243.8
D 12 110 628095 2509.13 1005 972 249.9
D 2 152 210542 838.49 1005 972 249.9
D 11 192 106990 424.18 1005 972 249.9

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