ASTROSAT CZTI

Data Quality Report

Orbit 54910

Creation date: 2025-11-21T20:10:19.659549
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_014T01_9000006528_54910cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54910cztM0_level2_quad_clean.evt
Size (bytes)448,185,60095,425,920
Size427.4 MB 91.0 MB
Events in quadrant A3,604,393618,548
Events in quadrant B3,476,116676,010
Events in quadrant C4,431,949587,604
Events in quadrant D4,566,915548,637

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153222
B0149002
C0176472
D0180142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65771942.949673%
B65771121.702904%
C65772864.348487%
D65772894.394101%

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 7527 6579 73 73 0.97% 1.11%
B 7527 6578 12 12 0.16% 0.18%
C 7527 6579 188 188 2.50% 2.86%
D 7527 6579 197 197 2.62% 2.99%

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 0 8 345572 1926.23 719 700 179.0
A 3 14 199348 1109.52 719 700 179.0
A 3 45 163646 910.11 719 700 179.0
B 5 236 415783 2725.05 706 682 152.3
B 5 185 121632 794.01 706 682 152.3
B 4 216 33462 215.19 706 682 152.3
C 4 5 506360 2661.1 691 687 190.0
C 9 38 350477 1840.77 691 687 190.0
C 13 3 264987 1390.88 691 687 190.0
D 11 129 478060 2440.34 692 665 195.6
D 2 172 268041 1366.77 692 665 195.6
D 10 181 266809 1360.47 692 665 195.6

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