ASTROSAT CZTI

Data Quality Report

Orbit 30981

Creation date: 2024-06-27T20:21:54.129751
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_071T42_9000004476_30981cztM0_level2.evt modeM0/AS1A10_071T42_9000004476_30981cztM0_level2_quad_clean.evt
Size (bytes)671,371,20081,645,120
Size640.3 MB 77.9 MB
Events in quadrant A4,057,007487,887
Events in quadrant B6,420,830486,464
Events in quadrant C4,793,778466,013
Events in quadrant D4,506,886463,458

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172452
B0251452
C0193092
D0185622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81773834.683869%
B81775406.603889%
C81774895.980188%
D81772913.558762%

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 8647 8177 0 0 0.00% 0.00%
B 8647 8178 2 2 0.02% 0.02%
C 8647 8178 25 25 0.29% 0.31%
D 8647 8178 15 15 0.17% 0.18%

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 13691 58.78 1051 1025 215.5
A 3 137 11406 48.18 1051 1025 215.5
A 0 226 8768 35.94 1051 1025 215.5
B 6 159 2256717 11020.02 1032 1002 204.7
B 0 190 52918 253.63 1032 1002 204.7
B 12 111 25735 120.83 1032 1002 204.7
C 0 10 682941 2873.61 998 1007 237.3
C 14 238 158521 663.75 998 1007 237.3
C 2 114 19352 77.3 998 1007 237.3
D 8 195 504575 2072.46 1019 991 243.0
D 2 250 108028 440.5 1019 991 243.0
D 2 234 35347 141.39 1019 991 243.0

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