ASTROSAT CZTI

Data Quality Report

Orbit 52865

Creation date: 2025-07-16T11:28:41.063729
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_011T08_9000006482_52865cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52865cztM0_level2_quad_clean.evt
Size (bytes)861,148,80095,973,120
Size821.3 MB 91.5 MB
Events in quadrant A5,681,369713,612
Events in quadrant B10,656,727538,232
Events in quadrant C4,941,361653,044
Events in quadrant D10,007,048469,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223800
B0369940
C0204480
D0349980

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76343043.982185%
B7634252533.075714%
C76344606.025675%
D7634240231.464501%

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 7634 7634 259 259 3.39% 3.39%
B 7634 7634 1897 1897 24.85% 24.85%
C 7634 7634 352 352 4.61% 4.61%
D 7634 7634 1997 1997 26.16% 26.16%

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 9 191 1041063 5141.74 794 772 202.3
A 4 238 405154 1998.7 794 772 202.3
A 5 243 240750 1186.12 794 772 202.3
B 8 3 6892746 46547.72 691 666 148.1
B 0 213 309547 2086.12 691 666 148.1
B 10 254 179188 1205.7 691 666 148.1
C 15 224 1095650 5223.61 759 753 209.6
C 2 12 277662 1321.1 759 753 209.6
C 7 80 213113 1013.14 759 753 209.6
D 15 125 3553353 19094.78 643 614 186.1
D 8 176 1597055 8580.33 643 614 186.1
D 2 37 735813 3951.45 643 614 186.1

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