ASTROSAT CZTI

Data Quality Report

Orbit 53839

Creation date: 2025-09-11T12:27:54.922414
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_057T04_9000006508_53839cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53839cztM0_level2_quad_clean.evt
Size (bytes)570,479,04061,873,920
Size544.1 MB 59.0 MB
Events in quadrant A3,582,824450,889
Events in quadrant B2,779,722496,413
Events in quadrant C9,514,101197,030
Events in quadrant D4,858,655382,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156111706
B012442894
C0343012708
D0196321816

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01075
B01054
C01086
D01055

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49112024.113215%
B4992190.380609%
C4883289159.205407%
D49054629.418960%

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 7583 5005 163 163 2.15% 3.26%
B 7583 5092 14 14 0.18% 0.27%
C 7582 4940 2785 2785 36.73% 56.38%
D 7583 5003 515 515 6.79% 10.29%

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 4 249 627409 4829.16 517 504 129.8
A 8 249 616493 4745.07 517 504 129.8
A 10 253 218969 1682.87 517 504 129.8
B 7 0 327690 2901.13 524 505 112.8
B 8 234 116828 1031.43 524 505 112.8
B 5 185 115935 1023.51 524 505 112.8
C 1 241 4385654 45106.19 348 346 97.2
C 12 249 1680150 17278.05 348 346 97.2
C 15 158 799258 8217.41 348 346 97.2
D 15 93 1313189 9451.46 489 466 138.9
D 10 172 902228 6492.59 489 466 138.9
D 2 120 136385 978.6 489 466 138.9

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