ASTROSAT CZTI

Data Quality Report

Orbit 56694

Creation date: 2026-03-21T20:25:01.260483
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_083T06_9000006558_56694cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56694cztM0_level2_quad_clean.evt
Size (bytes)462,222,72093,237,120
Size440.8 MB 88.9 MB
Events in quadrant A3,551,380631,135
Events in quadrant B2,964,723665,299
Events in quadrant C6,426,039509,722
Events in quadrant D3,678,913578,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150871
B0134261
C0235871
D0155121

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62811642.611049%
B62811272.021971%
C6282132921.155683%
D62821782.833493%

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 7311 6282 57 57 0.78% 0.91%
B 7311 6282 25 25 0.34% 0.40%
C 7311 6282 1202 1202 16.44% 19.13%
D 7312 6283 99 99 1.35% 1.58%

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 62 295824 1683.65 692 674 175.3
A 3 14 252567 1436.89 692 674 175.3
A 10 251 117994 669.24 692 674 175.3
B 10 16 48992 334.23 676 654 144.6
B 0 245 42243 287.57 676 654 144.6
B 10 247 36797 249.91 676 654 144.6
C 15 230 3188522 18194.4 613 606 175.2
C 13 3 357093 2034.58 613 606 175.2
C 6 223 128565 730.3 613 606 175.2
D 2 249 350384 1800.47 674 644 194.2
D 10 199 157368 806.82 674 644 194.2
D 3 12 148679 762.09 674 644 194.2

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