ASTROSAT CZTI

Data Quality Report

Orbit 20210419_A10_071T07_9000004322_level2

Creation date: 2021-04-21T10:52:02.332519
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/AS1A10_071T07_9000004322cztM0_level2_bc.evt modeM0/AS1A10_071T07_9000004322cztM0_level2_quad_clean.evt
Size (bytes)2,578,893,120733,835,520
Size2.4 GB 699.8 MB
Events in quadrant A12,990,3154,709,090
Events in quadrant B29,078,9014,690,077
Events in quadrant C14,223,7604,388,499
Events in quadrant D17,721,7244,320,161

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253530
B01822410
C01349340
D01441720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012220
B012220
C012220
D012220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600337191.197675%
B6003312922.152150%
C6003330385.060550%
D6003321953.656322%

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 69868 60037 0 0 0.00% 0.00%
B 69868 60032 10 10 0.01% 0.02%
C 69868 60018 26 26 0.04% 0.04%
D 69868 60034 50 50 0.07% 0.08%

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 8 192 121872 167.33 3332 3282 708.7
A 13 254 100772 137.56 3332 3282 708.7
A 0 226 20762 24.66 3332 3282 708.7
B 6 159 15974778 25505.38 3337 3264 626.2
B 5 255 115534 179.29 3337 3264 626.2
B 0 229 73930 112.85 3337 3264 626.2
C 3 233 885050 1213.12 3112 3103 727.0
C 2 16 383366 523.05 3112 3103 727.0
C 15 208 325967 444.1 3112 3103 727.0
D 13 104 2746115 3812.45 3165 3085 719.5
D 8 195 1327124 1840.24 3165 3085 719.5
D 7 223 588660 813.87 3165 3085 719.5

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