ASTROSAT CZTI

Data Quality Report

Orbit 20190501_A05_104T06_9000002878_level2

Creation date: 2025-11-29T22:29:47.057445
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/AS1A05_104T06_9000002878cztM0_level2.fits modeM0/AS1A05_104T06_9000002878cztM0_level2_quad_clean.evt
Size (bytes)122,368,320100,126,080
Size116.7 MB 95.5 MB
Events in quadrant A780,446603,124
Events in quadrant B749,624599,766
Events in quadrant C756,563563,638
Events in quadrant D511,708359,561

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02740
C02800
D02690

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274690
B0282540
C0270240
D0631590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130791671.276856%
B131021691.289879%
C130651721.316494%
D13052520139.848299%

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 15797 12339 0 0 0.00% 0.00%
B 15796 12348 0 0 0.00% 0.00%
C 15798 12317 0 0 0.00% 0.00%
D 15798 12181 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 29 758 11.11 203 191 51.0
A 9 19 639 8.78 203 191 51.0
A 7 110 604 8.09 203 191 51.0
B 2 9 586 9.72 198 189 40.8
B 14 254 504 7.71 198 189 40.8
B 2 8 500 7.61 198 189 40.8
C 1 81 581 7.57 199 187 52.1
C 1 80 555 7.07 199 187 52.1
C 12 241 526 6.51 199 187 52.1
D 15 46 389 6.32 146 133 40.5
D 6 231 367 5.77 146 133 40.5
D 7 5 362 5.65 146 133 40.5

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