ASTROSAT CZTI

Data Quality Report

Orbit 57214

Creation date: 2026-04-29T22:29:00.436647
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_070T08_9000006568_57214cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57214cztM0_level2_quad_clean.evt
Size (bytes)455,630,40095,526,720
Size434.5 MB 91.1 MB
Events in quadrant A2,832,417635,669
Events in quadrant B4,069,230672,466
Events in quadrant C5,205,294570,400
Events in quadrant D4,241,158549,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134871
B0168431
C0202221
D0172882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6660350.525526%
B66611672.507131%
C66615227.836661%
D66603405.105105%

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 7500 6661 0 0 0.00% 0.00%
B 7501 6662 49 49 0.65% 0.74%
C 7501 6662 386 386 5.15% 5.79%
D 7500 6661 319 319 4.25% 4.79%

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 13 248 27859 151.77 718 697 179.0
A 8 6 18643 100.28 718 697 179.0
A 13 254 9572 49.59 718 697 179.0
B 0 183 790006 5258.03 699 673 150.1
B 5 185 115295 763.54 699 673 150.1
B 10 16 108755 719.97 699 673 150.1
C 15 224 2339563 12879.61 668 660 181.6
C 12 254 80359 438.88 668 660 181.6
C 12 252 48591 263.94 668 660 181.6
D 12 33 744368 3860.1 677 646 192.7
D 12 128 291839 1511.36 677 646 192.7
D 7 238 169770 877.8 677 646 192.7

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