ASTROSAT CZTI

Data Quality Report

Orbit 52525

Creation date: 2025-06-14T11:58:01.805442
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/AS1C09_011T06_9000006478_52525cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52525cztM0_level2_quad_clean.evt
Size (bytes)725,178,24081,417,600
Size691.6 MB 77.6 MB
Events in quadrant A2,882,828618,060
Events in quadrant B3,444,589657,213
Events in quadrant C8,150,434447,581
Events in quadrant D11,876,241301,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133582
B0145282
C0287042
D0397012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6318300.474834%
B6318891.408674%
C6317174127.560551%
D6317324151.306000%

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 7493 6319 10 10 0.13% 0.16%
B 7493 6319 31 31 0.41% 0.49%
C 7492 6318 1548 1548 20.66% 24.50%
D 7492 6318 3069 3069 40.96% 48.58%

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 11 3 54950 326.08 666 649 166.5
A 3 14 54322 322.31 666 649 166.5
A 4 30 28872 169.48 666 649 166.5
B 10 254 168020 1195.09 663 639 140.1
B 4 81 131573 934.86 663 639 140.1
B 4 21 91332 647.54 663 639 140.1
C 15 224 2927226 18586.17 567 562 157.5
C 15 233 558452 3542.95 567 562 157.5
C 4 5 447510 2838.4 567 562 157.5
D 15 93 7647479 55833.52 465 441 137.0
D 6 42 1090727 7960.53 465 441 137.0
D 8 176 427479 3117.94 465 441 137.0

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