ASTROSAT CZTI

Data Quality Report

Orbit 53886

Creation date: 2025-09-14T13:22:42.096796
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_53886cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53886cztM0_level2_quad_clean.evt
Size (bytes)2,052,498,240221,299,200
Size1.9 GB 211.0 MB
Events in quadrant A12,065,3911,563,006
Events in quadrant B9,230,8711,762,256
Events in quadrant C20,615,2351,326,306
Events in quadrant D32,682,317810,403

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0483873
B0398943
C0736993
D01094583

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1793612707.080731%
B179372921.627920%
C17937347919.395663%
D17937880549.088476%

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 19536 17940 939 939 4.81% 5.23%
B 19537 17941 70 70 0.36% 0.39%
C 19537 17940 2762 2762 14.14% 15.40%
D 19537 17940 7754 7754 39.69% 43.22%

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 15 174 3369880 7143.5 1897 1852 471.5
A 4 249 543766 1149.39 1897 1852 471.5
A 0 8 256664 540.45 1897 1852 471.5
B 0 213 293730 713.66 1922 1852 409.0
B 7 0 259968 631.11 1922 1852 409.0
B 0 171 234564 569.0 1922 1852 409.0
C 15 224 10563041 21858.18 1747 1733 483.2
C 1 241 855642 1767.29 1747 1733 483.2
C 12 2 655495 1353.06 1747 1733 483.2
D 8 176 21256274 51052.13 1433 1368 416.3
D 6 239 2900396 6963.17 1433 1368 416.3
D 13 153 457501 1095.59 1433 1368 416.3

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