ASTROSAT CZTI

Data Quality Report

Orbit 13235

Creation date: 2024-06-27T16:38:12.699103
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_077T01_9000001970_13235cztM0_level2.evt modeM0/AS1G08_077T01_9000001970_13235cztM0_level2_quad_clean.evt
Size (bytes)641,148,48086,466,240
Size611.4 MB 82.5 MB
Events in quadrant A3,844,652551,957
Events in quadrant B8,350,364445,501
Events in quadrant C3,221,724571,187
Events in quadrant D3,510,673546,607

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161682
B0296571
C0147921
D0156331

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72162223.076497%
B7216235532.635809%
C72161171.621397%
D72161452.009424%

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 7467 7218 62 62 0.83% 0.86%
B 7467 7217 1677 1677 22.46% 23.24%
C 7467 7218 1 1 0.01% 0.01%
D 7467 7218 35 35 0.47% 0.48%

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 482547 2898.5 820 801 166.2
A 12 189 164590 985.46 820 801 166.2
A 8 15 23724 137.92 820 801 166.2
B 4 239 5570732 44055.09 657 640 126.4
B 0 230 155084 1221.53 657 640 126.4
B 3 209 21192 162.55 657 640 126.4
C 15 208 55317 293.26 806 806 185.9
C 8 128 9519 46.88 806 806 185.9
C 13 61 5910 27.46 806 806 185.9
D 1 52 222282 1146.93 800 776 193.1
D 8 195 176693 910.87 800 776 193.1
D 2 14 36996 187.54 800 776 193.1

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