ASTROSAT CZTI

Data Quality Report

Orbit 20180509_G08_033T01_9000002084_level2

Creation date: 2025-11-22T06:46:49.708383
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/AS1G08_033T01_9000002084cztM0_level2.fits modeM0/AS1G08_033T01_9000002084cztM0_level2_quad_clean.evt
Size (bytes)140,054,400155,819,520
Size133.6 MB 148.6 MB
Events in quadrant A872,1481,017,038
Events in quadrant B821,442967,246
Events in quadrant C838,514916,195
Events in quadrant D712,062820,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02920
B02920
C02920
D02920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307350
B0359440
C0303620
D0416240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144541901.314515%
B144547565.230386%
C14454790.546562%
D144546684.621558%

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 17234 14454 0 0 0.00% 0.00%
B 17234 14447 0 0 0.00% 0.00%
C 17234 14454 0 0 0.00% 0.00%
D 17234 14436 0 0 0.00% 0.00%

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 29 832 10.68 226 214 57.9
A 7 110 743 9.14 226 214 57.9
A 9 19 674 7.95 226 214 57.9
B 2 9 701 11.04 216 207 44.8
B 3 17 573 8.18 216 207 44.8
B 5 232 566 8.02 216 207 44.8
C 1 80 634 7.31 221 207 58.4
C 1 81 619 7.06 221 207 58.4
C 12 241 592 6.59 221 207 58.4
D 4 246 587 7.29 202 185 55.2
D 6 231 547 6.56 202 185 55.2
D 7 3 504 5.78 202 185 55.2

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