ASTROSAT CZTI

Data Quality Report

Orbit 23201

Creation date: 2024-06-27T18:51:12.967770
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_175T01_9000003428_23201cztM0_level2.evt modeM0/AS1T03_175T01_9000003428_23201cztM0_level2_quad_clean.evt
Size (bytes)527,590,08071,046,720
Size503.1 MB 67.8 MB
Events in quadrant A3,493,696429,548
Events in quadrant B3,548,411436,164
Events in quadrant C3,977,261415,321
Events in quadrant D4,516,861415,561

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146232
B0147552
C0161022
D0178662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519721.104464%
B6519841.288541%
C65192163.313392%
D65193214.924068%

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 7749 6519 0 0 0.00% 0.00%
B 7749 6519 5 5 0.06% 0.08%
C 7749 6519 56 56 0.72% 0.86%
D 7749 6519 177 177 2.28% 2.72%

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 9574 48.42 904 889 179.4
A 0 226 7985 39.56 904 889 179.4
A 3 137 7136 34.83 904 889 179.4
B 0 190 44150 262.88 892 873 164.6
B 12 111 19306 111.97 892 873 164.6
B 11 111 17249 99.47 892 873 164.6
C 0 10 379366 1909.9 868 877 198.2
C 14 238 138922 696.59 868 877 198.2
C 7 247 47760 236.58 868 877 198.2
D 1 52 486882 2264.92 878 854 214.6
D 12 233 448793 2087.42 878 854 214.6
D 13 153 127001 587.85 878 854 214.6

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