ASTROSAT CZTI

Data Quality Report

Orbit 54356

Creation date: 2025-10-15T13:08:57.365538
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_126T15_9000006516_54356cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54356cztM0_level2_quad_clean.evt
Size (bytes)353,269,44048,807,360
Size336.9 MB 46.5 MB
Events in quadrant A1,838,796388,955
Events in quadrant B1,827,983417,159
Events in quadrant C1,893,513353,751
Events in quadrant D7,213,21943,485

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011327
B011325
C011329
D010822

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118083290
B0118023229
C0130174263
D04136817719

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153
B0145
C0152
D0144

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A409540.097680%
B4120120.291262%
C4037280.693584%
D3210271784.641745%

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 6989 4404 0 0 0.00% 0.00%
B 6978 4396 3 3 0.04% 0.07%
C 6957 4355 24 24 0.34% 0.55%
D 6505 3468 2463 2463 37.86% 71.02%

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 7 206 127715 1180.9 433 422 107.8
A 4 3 10931 97.49 433 422 107.8
A 13 254 8252 72.64 433 422 107.8
B 10 247 47693 507.28 429 413 93.2
B 0 213 42829 455.1 429 413 93.2
B 0 171 18999 199.42 429 413 93.2
C 14 254 96268 845.2 406 402 113.4
C 1 29 64990 569.44 406 402 113.4
C 12 2 44583 389.52 406 402 113.4
D 8 176 6344731 177404.13 121 115 35.8
D 12 3 158407 4426.06 121 115 35.8
D 15 108 125746 3512.81 121 115 35.8

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