ASTROSAT CZTI

Data Quality Report

Orbit 00938

Creation date: 2024-06-27T14:05:00.730570
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/AS1P01_998T01_9000000188_00938cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00938cztM0_level2_quad_clean.evt
Size (bytes)2,750,918,400102,767,040
Size2.6 GB 98.0 MB
Events in quadrant A19,528,082508,213
Events in quadrant B20,958,514502,626
Events in quadrant C19,236,433491,719
Events in quadrant D22,502,480471,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0697020
B0740200
C0688500
D0785800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16488900.545852%
B164881300.788452%
C16488330.200146%
D164885183.141679%

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 19378 16491 420 420 2.17% 2.55%
B 19378 16491 638 638 3.29% 3.87%
C 19378 16491 312 312 1.61% 1.89%
D 19378 16491 1742 1742 8.99% 10.56%

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 14 170 121645 96.21 5056 5090 1211.5
A 11 79 20652 12.84 5056 5090 1211.5
A 3 111 15849 8.88 5056 5090 1211.5
B 0 182 246004 195.39 5238 5254 1232.2
B 15 22 188644 148.83 5238 5254 1232.2
B 7 221 126450 98.36 5238 5254 1232.2
C 15 241 608660 458.17 4740 4903 1317.7
C 3 111 64181 44.98 4740 4903 1317.7
C 3 79 46708 31.72 4740 4903 1317.7
D 12 188 3889062 2726.22 4621 4800 1424.8
D 1 4 796455 555.63 4621 4800 1424.8
D 12 22 156880 106.74 4621 4800 1424.8

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