ASTROSAT CZTI

Data Quality Report

Orbit 55009

Creation date: 2025-11-28T11:48:43.356291
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_55009cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_55009cztM0_level2_quad_clean.evt
Size (bytes)933,007,68076,029,120
Size889.8 MB 72.5 MB
Events in quadrant A4,699,215640,282
Events in quadrant B3,263,754736,059
Events in quadrant C10,042,342420,504
Events in quadrant D16,004,57531,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188662
B0146452
C0345189
D0522172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67944787.035620%
B6794731.074477%
C6792266639.252061%
D6793649695.627852%

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 7949 6795 403 403 5.07% 5.93%
B 7949 6794 5 5 0.06% 0.07%
C 7948 6794 2731 2731 34.36% 40.20%
D 7947 6792 5352 5352 67.35% 78.80%

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 15 32 1806261 10039.01 719 701 179.9
A 13 248 63428 348.77 719 701 179.9
A 3 14 21073 113.27 719 701 179.9
B 5 236 161291 1022.32 736 711 157.1
B 5 185 101277 640.24 736 711 157.1
B 10 28 22819 140.75 736 711 157.1
C 9 38 7235628 44138.56 592 587 163.9
C 1 16 130806 794.42 592 587 163.9
C 14 254 123031 746.99 592 587 163.9
D 15 94 14923370 291880.52 171 162 51.1
D 2 249 93184 1819.4 171 162 51.1
D 3 224 56812 1108.01 171 162 51.1

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