ASTROSAT CZTI

Data Quality Report

Orbit 20161224_C02_003T01_9000000924_level2

Creation date: 2025-11-08T22:08:06.048265
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/AS1C02_003T01_9000000924cztM0_level2.fits modeM0/AS1C02_003T01_9000000924cztM0_level2_quad_clean.evt
Size (bytes)949,484,160989,988,480
Size905.5 MB 944.1 MB
Events in quadrant A5,708,9186,012,350
Events in quadrant B5,561,8566,034,836
Events in quadrant C5,631,9085,693,768
Events in quadrant D4,716,3245,108,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550
B01550
C01550
D01560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021260
B021260
C021260
D021260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02219930
B02162110
C02154550
D02571000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10407117021.635422%
B10407214901.431701%
C10407211791.132870%
D10407146784.495008%

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 123974 104070 0 0 0.00% 0.00%
B 123975 104072 0 0 0.00% 0.00%
C 123975 104073 0 0 0.00% 0.00%
D 123975 103914 0 0 0.00% 0.00%

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 14 188 5768 11.71 1478 1373 375.3
A 0 29 5545 11.12 1478 1373 375.3
A 14 204 4849 9.26 1478 1373 375.3
B 2 9 4739 11.49 1464 1391 291.5
B 12 226 3871 8.51 1464 1391 291.5
B 14 254 3816 8.32 1464 1391 291.5
C 1 80 3975 6.6 1487 1374 394.2
C 1 81 3955 6.55 1487 1374 394.2
C 12 241 3852 6.28 1487 1374 394.2
D 3 14 3586 6.55 1344 1216 362.1
D 6 231 3517 6.36 1344 1216 362.1
D 6 83 3352 5.9 1344 1216 362.1

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