ASTROSAT CZTI

Data Quality Report

Orbit 20160321_T01_107T01_9000000386_level2

Creation date: 2025-10-28T19:33:51.338802
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_107T01_9000000386cztM0_level2.fits modeM0/AS1T01_107T01_9000000386cztM0_level2_quad_clean.evt
Size (bytes)117,763,200127,837,440
Size112.3 MB 121.9 MB
Events in quadrant A701,980769,403
Events in quadrant B683,166782,282
Events in quadrant C684,254732,707
Events in quadrant D583,942673,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267930
B0269500
C0289220
D0275280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13224360.272232%
B13224400.302480%
C132241891.429220%
D13224380.287356%

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 15448 13223 0 0 0.00% 0.00%
B 15448 13223 0 0 0.00% 0.00%
C 15448 13224 0 0 0.00% 0.00%
D 15448 13223 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 14 188 691 10.48 181 170 49.7
A 0 29 686 10.38 181 170 49.7
A 7 110 593 8.51 181 170 49.7
B 2 9 615 12.0 180 172 36.9
B 12 226 544 10.08 180 172 36.9
B 2 8 464 7.91 180 172 36.9
C 12 241 504 6.73 180 167 50.1
C 9 188 500 6.65 180 167 50.1
C 7 111 497 6.59 180 167 50.1
D 11 82 446 6.13 166 150 48.3
D 1 3 439 5.98 166 150 48.3
D 3 14 438 5.96 166 150 48.3

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