ASTROSAT CZTI

Data Quality Report

Orbit 41070

Creation date: 2024-06-27T22:24:04.424489
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/AS1A12_095T02_9000005596_41070cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41070cztM0_level2_quad_clean.evt
Size (bytes)150,045,12037,509,120
Size143.1 MB 35.8 MB
Events in quadrant A1,277,908258,714
Events in quadrant B1,178,545261,884
Events in quadrant C1,156,189247,477
Events in quadrant D1,771,894212,591

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051262
B048821
C046541
D066791

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2150100.465116%
B2150130.604651%
C2150361.674419%
D215024211.255814%

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 4273 2151 2 2 0.05% 0.09%
B 4273 2151 4 4 0.09% 0.19%
C 4273 2151 36 36 0.84% 1.67%
D 4273 2151 229 229 5.36% 10.65%

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 10 83 237493 4433.29 252 247 53.5
A 12 189 56396 1049.23 252 247 53.5
A 13 6 4763 84.39 252 247 53.5
B 0 190 95776 1915.2 250 243 49.9
B 0 186 29265 581.82 250 243 49.9
B 15 85 28661 569.71 250 243 49.9
C 0 10 96722 1661.35 244 245 58.1
C 15 214 92282 1584.9 244 245 58.1
C 14 254 10864 182.86 244 245 58.1
D 2 16 387015 6583.04 235 227 58.8
D 13 249 334655 5691.89 235 227 58.8
D 2 153 29409 496.67 235 227 58.8

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