ASTROSAT CZTI

Data Quality Report

Orbit 20160125_T01_051T01_9000000292_level2

Creation date: 2025-10-26T00:27:07.192422
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/AS1T01_051T01_9000000292cztM0_level2.fits modeM0/AS1T01_051T01_9000000292cztM0_level2_quad_clean.evt
Size (bytes)580,714,560846,529,920
Size553.8 MB 807.3 MB
Events in quadrant A3,379,9345,482,751
Events in quadrant B3,332,7865,510,577
Events in quadrant C3,284,8585,185,351
Events in quadrant D2,805,5444,679,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139704983316520139702401237038
B1139704983316520139702401237038
C1139704983316520139702401237038
D1139704983316520139702401237038

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02973120
B03048430
C02917010
D03176080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013980
B013980
C013980
D013980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697591550.222194%
B697531530.219345%
C697552060.295319%
D6975922283.193853%

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 80176 69760 0 0 0.00% 0.00%
B 80176 69756 0 0 0.00% 0.00%
C 80176 69757 0 0 0.00% 0.00%
D 80176 69730 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 0 29 3092 11.25 874 818 202.2
A 7 110 2955 10.57 874 818 202.2
A 9 19 2434 7.99 874 818 202.2
B 2 9 2724 11.88 881 838 158.7
B 5 128 2228 8.76 881 838 158.7
B 14 254 2184 8.48 881 838 158.7
C 12 241 2363 7.43 866 801 210.2
C 3 235 2168 6.5 866 801 210.2
C 2 191 2155 6.44 866 801 210.2
D 1 19 2052 7.01 800 733 188.2
D 6 44 2026 6.87 800 733 188.2
D 3 30 2011 6.79 800 733 188.2

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