ASTROSAT CZTI

Data Quality Report

Orbit 54937

Creation date: 2025-11-23T15:22:24.839833
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_014T01_9000006528_54937cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54937cztM0_level2_quad_clean.evt
Size (bytes)458,668,80097,542,720
Size437.4 MB 93.0 MB
Events in quadrant A4,161,868627,622
Events in quadrant B2,954,699701,792
Events in quadrant C4,952,121597,324
Events in quadrant D4,397,961567,631

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168932
B0137102
C0193302
D0177422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65853725.649203%
B65851041.579347%
C65854396.666667%
D65842483.766707%

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 7705 6586 308 308 4.00% 4.68%
B 7705 6585 10 10 0.13% 0.15%
C 7705 6586 378 378 4.91% 5.74%
D 7704 6584 174 174 2.26% 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 3 45 724502 4133.72 712 694 175.1
A 5 241 275248 1568.0 712 694 175.1
A 3 14 171576 975.92 712 694 175.1
B 7 252 53693 343.85 715 690 154.1
B 0 182 31333 198.79 715 690 154.1
B 12 111 18853 117.83 715 690 154.1
C 12 252 932079 4916.72 687 680 189.4
C 4 5 916091 4832.32 687 680 189.4
C 14 254 247696 1303.96 687 680 189.4
D 2 249 476645 2424.08 692 663 196.4
D 2 207 252446 1282.28 692 663 196.4
D 3 224 225996 1147.57 692 663 196.4

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