ASTROSAT CZTI

Data Quality Report

Orbit 56752

Creation date: 2026-03-25T17:33:34.038999
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_9000006560_56752cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56752cztM0_level2_quad_clean.evt
Size (bytes)547,248,96091,592,640
Size521.9 MB 87.3 MB
Events in quadrant A4,354,381612,902
Events in quadrant B6,416,946602,616
Events in quadrant C4,991,863554,266
Events in quadrant D3,989,999550,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172921
B0235261
C0195221
D0162871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64903164.869029%
B6490107416.548536%
C649168210.506856%
D64913435.284240%

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 7535 6491 188 188 2.50% 2.90%
B 7535 6491 806 806 10.70% 12.42%
C 7536 6492 522 522 6.93% 8.04%
D 7536 6492 240 240 3.18% 3.70%

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 14 851738 4927.1 701 684 172.7
A 3 62 621366 3593.38 701 684 172.7
A 10 251 121429 699.04 701 684 172.7
B 4 206 3339901 23091.45 669 645 144.6
B 5 185 190706 1314.3 669 645 144.6
B 0 63 48095 328.12 669 645 144.6
C 15 230 1667400 9075.93 666 660 183.6
C 15 215 216332 1174.4 666 660 183.6
C 6 223 88186 476.61 666 660 183.6
D 2 249 473583 2409.81 683 651 196.3
D 5 113 316285 1608.31 683 651 196.3
D 7 238 168877 857.19 683 651 196.3

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