ASTROSAT CZTI

Data Quality Report

Orbit 58412

Creation date: 2026-07-15T12:51:55.406153
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_045T01_9000006590_58412cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58412cztM0_level2_quad_clean.evt
Size (bytes)3,940,617,600453,625,920
Size3.7 GB 432.6 MB
Events in quadrant A35,180,0133,275,907
Events in quadrant B64,131,8311,562,902
Events in quadrant C19,872,4903,357,349
Events in quadrant D23,918,8163,073,868

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07280
B07280
C07280
D07280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012934882
B0215265201
C08384426
D09614635

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3586535819.984665%
B358512217361.847647%
C358735481.527611%
D3587012633.521048%

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 43350 35887 2797 2797 6.45% 7.79%
B 43351 35874 14968 14968 34.53% 41.72%
C 43350 35887 308 308 0.71% 0.86%
D 43350 35887 947 947 2.18% 2.64%

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 12 114 6568516 6840.15 3910 3818 959.7
A 3 14 6292428 6552.48 3910 3818 959.7
A 4 249 3350087 3486.68 3910 3818 959.7
B 6 255 48706707 86073.97 2663 2558 565.8
B 5 172 2502181 4417.54 2663 2558 565.8
B 4 158 1038732 1831.21 2663 2558 565.8
C 9 38 1380636 1303.16 3873 3839 1056.5
C 5 10 843073 794.35 3873 3839 1056.5
C 13 3 739121 695.96 3873 3839 1056.5
D 12 110 3681458 3393.86 3816 3650 1083.7
D 8 240 2875081 2649.74 3816 3650 1083.7
D 2 249 627381 575.57 3816 3650 1083.7

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