ASTROSAT CZTI

Data Quality Report

Orbit 20201110_A09_038T38_9000003982_level2

Creation date: 2021-01-07T14:31:25.863671
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_038T38_9000003982cztM0_level2_bc.evt modeM0/AS1A09_038T38_9000003982cztM0_level2_quad_clean.evt
Size (bytes)246,211,20096,958,080
Size234.8 MB 92.5 MB
Events in quadrant A1,150,543664,234
Events in quadrant B1,092,360675,282
Events in quadrant C990,637638,603
Events in quadrant D3,857,363589,870

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111530
B0108080
C0107190
D0202020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5261981.862764%
B5261711.349553%
C5261911.729709%
D526176914.616993%

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 5981 5260 4 4 0.07% 0.08%
B 5981 5260 0 0 0.00% 0.00%
C 5981 5260 0 0 0.00% 0.00%
D 5981 5260 303 303 5.07% 5.76%

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 13 248 112487 1851.26 266 261 60.6
A 13 254 8770 140.36 266 261 60.6
A 8 192 5397 84.72 266 261 60.6
B 0 230 44423 803.41 268 262 55.0
B 0 190 4638 79.61 268 262 55.0
B 15 32 3984 67.71 268 262 55.0
C 3 233 7308 112.38 254 252 62.8
C 8 208 3193 46.84 254 252 62.8
C 13 61 1456 19.18 254 252 62.8
D 1 52 1160998 18947.72 248 238 61.3
D 12 2 1063259 17352.27 248 238 61.3
D 6 112 517304 8440.35 248 238 61.3

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