ASTROSAT CZTI

Data Quality Report

Orbit 54490

Creation date: 2025-10-24T15:15:48.027360
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/AS1A14_126T19_9000006518_54490cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54490cztM0_level2_quad_clean.evt
Size (bytes)308,534,40059,999,040
Size294.2 MB 57.2 MB
Events in quadrant A2,019,472397,125
Events in quadrant B2,026,312427,415
Events in quadrant C1,967,193378,925
Events in quadrant D5,069,636308,043

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093810
B091780
C091780
D0181440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4336180.415129%
B4336160.369004%
C4336190.438192%
D433769315.978787%

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 4336 4336 17 17 0.39% 0.39%
B 4336 4336 11 11 0.25% 0.25%
C 4336 4336 19 19 0.44% 0.44%
D 4337 4337 720 720 16.60% 16.60%

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 12 15 162519 1490.98 434 422 108.7
A 4 249 86363 790.49 434 422 108.7
A 0 8 33442 303.72 434 422 108.7
B 7 0 107293 1158.08 427 412 92.3
B 5 172 94082 1014.93 427 412 92.3
B 0 213 83424 899.45 427 412 92.3
C 7 64 95677 820.5 418 415 116.1
C 4 5 63380 542.32 418 415 116.1
C 9 38 48692 415.82 418 415 116.1
D 7 70 1937345 17262.23 392 375 112.2
D 8 176 1302225 11602.06 392 375 112.2
D 2 172 116078 1031.14 392 375 112.2

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