ASTROSAT CZTI

Data Quality Report

Orbit 53183

Creation date: 2025-07-29T11:59:21.925820
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/AS1C09_011T06_9000006490_53183cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53183cztM0_level2_quad_clean.evt
Size (bytes)1,034,884,80069,091,200
Size986.9 MB 65.9 MB
Events in quadrant A4,013,751602,874
Events in quadrant B3,775,519661,992
Events in quadrant C12,943,194288,010
Events in quadrant D17,052,60067,583

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169651
B0162271
C0430211
D0553621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67613915.783168%
B67622343.460515%
C6762383956.773144%
D6762613990.786749%

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 7031 6762 250 250 3.56% 3.70%
B 7032 6763 62 62 0.88% 0.92%
C 7031 6761 3775 3775 53.69% 55.83%
D 7031 6761 6065 6065 86.26% 89.71%

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 3 62 459251 2665.94 690 671 172.0
A 7 206 280750 1628.23 690 671 172.0
A 15 174 224922 1303.67 690 671 172.0
B 4 81 565697 3821.09 691 667 147.9
B 2 249 135527 912.01 691 667 147.9
B 10 28 59481 397.74 691 667 147.9
C 0 240 6614875 46172.93 519 514 143.3
C 1 241 2398061 16736.58 519 514 143.3
C 15 224 1005387 7014.73 519 514 143.3
D 15 125 14940833 149531.64 345 329 99.9
D 2 62 168913 1687.27 345 329 99.9
D 11 245 140617 1404.07 345 329 99.9

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