ASTROSAT CZTI

Data Quality Report

Orbit 14117

Creation date: 2024-06-27T16:50:28.374644
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/AS1A04_149T01_9000002082_14117cztM0_level2.evt modeM0/AS1A04_149T01_9000002082_14117cztM0_level2_quad_clean.evt
Size (bytes)576,161,280138,193,920
Size549.5 MB 131.8 MB
Events in quadrant A3,684,772928,859
Events in quadrant B4,733,696929,269
Events in quadrant C3,856,211905,145
Events in quadrant D4,632,464866,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165463
B0192802
C0166582
D0193992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7989821.026411%
B79892663.329578%
C7989811.013894%
D79892453.066717%

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 8455 7993 1 1 0.01% 0.01%
B 8455 7993 52 52 0.62% 0.65%
C 8455 7993 1 1 0.01% 0.01%
D 8455 7993 134 134 1.58% 1.68%

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 12 96 27803 140.84 944 923 190.9
A 0 226 8457 39.47 944 923 190.9
A 13 248 7853 36.31 944 923 190.9
B 10 16 504167 2786.83 943 917 180.6
B 0 189 329218 1818.02 943 917 180.6
B 0 190 74651 408.31 943 917 180.6
C 3 233 270720 1285.28 906 907 209.9
C 10 22 23681 108.49 906 907 209.9
C 5 96 15051 67.38 906 907 209.9
D 10 157 466870 1957.4 888 866 238.1
D 1 52 265593 1111.96 888 866 238.1
D 2 152 195868 819.09 888 866 238.1

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