ASTROSAT CZTI

Data Quality Report

Orbit 29175

Creation date: 2024-06-27T20:01:07.318285
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/AS1A10_099T01_9000004184_29175cztM0_level2.evt modeM0/AS1A10_099T01_9000004184_29175cztM0_level2_quad_clean.evt
Size (bytes)870,552,000159,390,720
Size830.2 MB 152.0 MB
Events in quadrant A5,842,0211,000,398
Events in quadrant B6,239,5441,025,990
Events in quadrant C6,011,703981,460
Events in quadrant D7,427,938957,881

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252612
B0263672
C0253882
D0303002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124661050.842291%
B124661371.098989%
C124671751.403706%
D124672562.053421%

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 13686 12469 0 0 0.00% 0.00%
B 13686 12469 5 5 0.04% 0.04%
C 13687 12470 0 0 0.00% 0.00%
D 13687 12470 112 112 0.82% 0.90%

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 22309 68.4 1513 1478 304.5
A 3 137 15195 45.04 1513 1478 304.5
A 0 226 12721 36.92 1513 1478 304.5
B 0 183 308012 1067.3 1497 1459 287.2
B 12 111 36686 122.65 1497 1459 287.2
B 11 111 33882 112.88 1497 1459 287.2
C 14 238 234383 681.87 1460 1467 341.6
C 3 233 54922 156.49 1460 1467 341.6
C 2 114 29251 81.34 1460 1467 341.6
D 1 52 1019831 2931.32 1464 1425 347.4
D 8 195 668063 1918.81 1464 1425 347.4
D 13 153 164494 469.37 1464 1425 347.4

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