ASTROSAT CZTI

Data Quality Report

Orbit 15997

Creation date: 2024-06-27T17:16:19.326396
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/AS1T02_090T01_9000002360_15997cztM0_level2.evt modeM0/AS1T02_090T01_9000002360_15997cztM0_level2_quad_clean.evt
Size (bytes)480,358,080102,418,560
Size458.1 MB 97.7 MB
Events in quadrant A3,439,016665,148
Events in quadrant B3,654,032674,751
Events in quadrant C3,479,370650,003
Events in quadrant D3,511,381636,094

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144793
B0151432
C0143272
D0150232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6831460.673401%
B68311151.683502%
C68311151.683502%
D6831751.097936%

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 7567 6833 4 4 0.05% 0.06%
B 7567 6833 12 12 0.16% 0.18%
C 7567 6833 3 3 0.04% 0.04%
D 7567 6833 19 19 0.25% 0.28%

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 15 239 51228 284.93 863 847 176.8
A 9 143 41795 231.58 863 847 176.8
A 13 210 19771 107.02 863 847 176.8
B 0 229 55011 329.62 866 845 164.3
B 0 189 45180 269.79 866 845 164.3
B 10 245 44878 267.95 866 845 164.3
C 14 238 126967 640.73 834 843 196.8
C 3 233 80450 404.42 834 843 196.8
C 0 207 16356 78.81 834 843 196.8
D 12 218 166285 797.98 841 820 207.4
D 2 152 63646 302.99 841 820 207.4
D 4 239 30536 143.31 841 820 207.4

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