ASTROSAT CZTI

Data Quality Report

Orbit 21304

Creation date: 2024-06-27T18:26:08.569265
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/AS1T03_140T01_9000003142_21304cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21304cztM0_level2_quad_clean.evt
Size (bytes)516,185,28097,320,960
Size492.3 MB 92.8 MB
Events in quadrant A3,672,208639,144
Events in quadrant B3,604,093645,318
Events in quadrant C3,413,734619,123
Events in quadrant D4,495,491584,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150592
B0148913
C0144122
D0176602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65901111.684370%
B65901271.927162%
C65901662.518968%
D65903605.462822%

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 8785 6590 16 16 0.18% 0.24%
B 8785 6590 17 17 0.19% 0.26%
C 8785 6590 0 0 0.00% 0.00%
D 8785 6591 252 252 2.87% 3.82%

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 110729 620.37 888 871 177.1
A 15 236 107311 601.07 888 871 177.1
A 9 143 15397 82.03 888 871 177.1
B 0 189 47198 281.2 874 854 164.8
B 3 64 39561 234.86 874 854 164.8
B 0 230 33158 196.01 874 854 164.8
C 14 238 134384 688.88 836 844 193.9
C 10 23 9185 43.03 836 844 193.9
C 0 10 7677 35.25 836 844 193.9
D 1 52 1015774 4985.38 843 820 203.6
D 13 153 74463 361.73 843 820 203.6
D 12 235 58454 283.09 843 820 203.6

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