ASTROSAT CZTI

Data Quality Report

Orbit 15915

Creation date: 2024-06-27T17:15:05.102337
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/AS1A04_143T01_9000002344_15915cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15915cztM0_level2_quad_clean.evt
Size (bytes)945,023,040140,428,800
Size901.2 MB 133.9 MB
Events in quadrant A9,224,476832,418
Events in quadrant B6,470,071880,708
Events in quadrant C6,022,072837,967
Events in quadrant D6,047,392826,614

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358683
B0271432
C0257482
D0265312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126508306.561265%
B126501991.573123%
C126501641.296443%
D126501821.438735%

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 13896 12651 455 455 3.27% 3.60%
B 13896 12651 45 45 0.32% 0.36%
C 13896 12651 0 0 0.00% 0.00%
D 13896 12651 57 57 0.41% 0.45%

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 3519856 11902.26 1471 1436 295.6
A 15 157 34236 110.96 1471 1436 295.6
A 9 143 24252 77.18 1471 1436 295.6
B 4 142 215184 737.65 1509 1468 289.7
B 4 216 132919 453.71 1509 1468 289.7
B 4 173 61053 205.66 1509 1468 289.7
C 14 238 221770 644.02 1455 1463 342.1
C 3 233 86209 247.74 1455 1463 342.1
C 0 207 15884 42.16 1455 1463 342.1
D 10 70 156179 425.38 1481 1434 363.8
D 1 52 118020 320.49 1481 1434 363.8
D 13 172 99849 270.54 1481 1434 363.8

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