ASTROSAT CZTI

Data Quality Report

Orbit 26889

Creation date: 2024-06-27T19:34:06.767427
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/AS1A09_038T12_9000003880_26889cztM0_level2.evt modeM0/AS1A09_038T12_9000003880_26889cztM0_level2_quad_clean.evt
Size (bytes)230,212,80033,753,600
Size219.5 MB 32.2 MB
Events in quadrant A2,238,222208,272
Events in quadrant B1,345,863227,783
Events in quadrant C1,109,630222,534
Events in quadrant D2,130,775207,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081311
B053621
C045031
D078041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215025111.674419%
B2150733.395349%
C2150271.255814%
D215031214.511628%

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 3145 2151 117 117 3.72% 5.44%
B 3145 2151 25 25 0.79% 1.16%
C 3145 2151 0 0 0.00% 0.00%
D 3145 2151 268 268 8.52% 12.46%

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 13 721727 12712.22 275 269 56.8
A 6 16 452525 7968.83 275 269 56.8
A 13 254 3607 58.81 275 269 56.8
B 3 64 120771 2165.28 281 275 55.6
B 0 190 60399 1080.41 281 275 55.6
B 15 33 51075 912.86 281 275 55.6
C 14 238 43493 672.29 269 270 64.3
C 15 208 13162 200.52 269 270 64.3
C 3 233 2569 35.76 269 270 64.3
D 1 52 1070612 17633.33 252 246 60.7
D 2 250 54059 886.52 252 246 60.7
D 7 80 18520 301.05 252 246 60.7

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