ASTROSAT CZTI

Data Quality Report

Orbit 56945

Creation date: 2026-04-07T18:14:37.713131
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_083T14_9000006564_56945cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56945cztM0_level2_quad_clean.evt
Size (bytes)813,810,24079,125,120
Size776.1 MB 75.5 MB
Events in quadrant A5,680,473604,635
Events in quadrant B7,539,924586,834
Events in quadrant C3,326,280623,242
Events in quadrant D13,048,952106,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216101
B0270641
C0150312
D0434541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68076459.475540%
B6807141720.816806%
C68071081.586602%
D6807585385.985015%

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 7616 6807 508 508 6.67% 7.46%
B 7616 6806 1037 1037 13.62% 15.24%
C 7616 6806 40 40 0.53% 0.59%
D 7616 6806 3479 3479 45.68% 51.12%

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 64 1265580 7300.59 707 688 173.3
A 11 31 783369 4517.41 707 688 173.3
A 4 249 541161 3119.45 707 688 173.3
B 5 172 3910940 27693.45 665 640 141.2
B 4 156 415057 2934.98 665 640 141.2
B 10 16 251419 1776.06 665 640 141.2
C 13 3 171288 883.39 706 699 193.1
C 14 254 134454 692.65 706 699 193.1
C 12 249 85995 441.7 706 699 193.1
D 12 33 10446533 93555.42 388 370 111.7
D 8 240 222162 1986.36 388 370 111.7
D 12 1 194107 1735.1 388 370 111.7

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