ASTROSAT CZTI

Data Quality Report

Orbit 54766

Creation date: 2025-11-12T06:07:54.162761
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_103T01_9000006524_54766cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54766cztM0_level2_quad_clean.evt
Size (bytes)725,814,72090,492,480
Size692.2 MB 86.3 MB
Events in quadrant A3,190,364672,701
Events in quadrant B10,293,127446,005
Events in quadrant C5,914,254599,018
Events in quadrant D6,918,123527,233

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148543
B0354692
C0226262
D0257532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71031141.604956%
B7104306943.201014%
C710471310.036599%
D7104110015.484234%

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 8763 7105 1 1 0.01% 0.01%
B 8764 7105 2236 2236 25.51% 31.47%
C 8764 7105 486 486 5.55% 6.84%
D 8764 7106 911 911 10.39% 12.82%

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 4 206 59322 307.38 776 757 190.5
A 4 3 37032 190.39 776 757 190.5
A 3 14 35434 182.0 776 757 190.5
B 2 249 7123659 57775.21 565 543 123.3
B 1 207 558560 4526.05 565 543 123.3
B 10 247 85638 690.2 565 543 123.3
C 4 5 2253902 11524.73 714 707 195.5
C 9 38 282933 1443.54 714 707 195.5
C 13 3 282636 1442.02 714 707 195.5
D 3 12 3181458 16319.3 689 658 194.9
D 11 129 325440 1666.31 689 658 194.9
D 8 160 252596 1292.58 689 658 194.9

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