ASTROSAT CZTI

Data Quality Report

Orbit 56351

Creation date: 2026-02-26T20:01:42.437886
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_083T05_9000006554_56351cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56351cztM0_level2_quad_clean.evt
Size (bytes)930,640,32085,959,360
Size887.5 MB 82.0 MB
Events in quadrant A6,168,319639,185
Events in quadrant B4,704,292718,137
Events in quadrant C7,825,441559,883
Events in quadrant D15,189,587180,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234192
B0189700
C0282980
D0501620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72537119.802840%
B72543995.500414%
C7254147920.388751%
D7254546475.323959%

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 7253 7253 607 607 8.37% 8.37%
B 7254 7254 240 240 3.31% 3.31%
C 7254 7254 1221 1221 16.83% 16.83%
D 7254 7254 4710 4710 64.93% 64.93%

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 4 249 1297924 7008.88 747 727 185.1
A 4 95 709386 3828.95 747 727 185.1
A 8 25 266662 1436.87 747 727 185.1
B 5 185 741886 4510.12 774 745 164.3
B 4 206 180331 1092.85 774 745 164.3
B 4 171 141618 857.27 774 745 164.3
C 12 254 2773007 14275.77 705 699 194.2
C 15 230 968572 4983.98 705 699 194.2
C 13 3 548703 2821.9 705 699 194.2
D 8 129 7346854 53621.98 466 441 137.0
D 2 62 4840618 35328.79 466 441 137.0
D 6 239 388153 2829.93 466 441 137.0

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