ASTROSAT CZTI

Data Quality Report

Orbit 12809

Creation date: 2024-06-27T16:32:36.989698
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/AS1G08_071T01_9000001888_12809cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12809cztM0_level2_quad_clean.evt
Size (bytes)512,648,64068,253,120
Size488.9 MB 65.1 MB
Events in quadrant A3,469,052409,553
Events in quadrant B4,552,344405,558
Events in quadrant C3,303,026409,527
Events in quadrant D3,767,563395,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142853
B0179332
C0137212
D0153652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63911031.611641%
B63914026.290095%
C6391811.267407%
D63911412.206228%

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 7691 6392 0 0 0.00% 0.00%
B 7691 6392 189 189 2.46% 2.96%
C 7691 6392 0 0 0.00% 0.00%
D 7691 6392 53 53 0.69% 0.83%

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 12 189 108920 624.18 873 858 173.1
A 0 226 7855 40.41 873 858 173.1
A 12 194 6934 35.09 873 858 173.1
B 4 239 663266 4245.07 846 828 156.0
B 10 245 203707 1300.1 846 828 156.0
B 15 201 148973 949.35 846 828 156.0
C 13 61 6380 28.88 846 853 191.4
C 0 207 2668 9.48 846 853 191.4
C 3 202 2077 6.4 846 853 191.4
D 1 52 263257 1213.16 839 824 216.3
D 10 199 204817 943.01 839 824 216.3
D 8 195 66931 305.6 839 824 216.3

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