ASTROSAT CZTI

Data Quality Report

Orbit 20210413_A10_053T06_9000004300_level2

Creation date: 2021-04-17T11:39:40.596970
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_053T06_9000004300cztM0_level2_bc.evt modeM0/AS1A10_053T06_9000004300cztM0_level2_quad_clean.evt
Size (bytes)1,452,274,560386,432,640
Size1.4 GB 368.5 MB
Events in quadrant A5,854,1272,546,923
Events in quadrant B14,260,2812,503,127
Events in quadrant C13,233,6892,388,599
Events in quadrant D8,787,6742,401,434

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0564410
B0847170
C0812260
D0652050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05520
B05520
C05520
D05520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271213051.124590%
B271216632.444600%
C2712121908.074923%
D271216462.381918%

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 29396 27123 1 1 0.00% 0.00%
B 29396 27121 9 9 0.03% 0.03%
C 29396 27122 226 226 0.77% 0.83%
D 29396 27119 162 162 0.55% 0.60%

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 12 96 209074 672.33 1421 1398 308.9
A 8 192 63340 200.53 1421 1398 308.9
A 3 1 52203 164.48 1421 1398 308.9
B 6 159 7716224 28527.89 1408 1375 270.4
B 6 36 998321 3686.5 1408 1375 270.4
B 0 183 37636 134.09 1408 1375 270.4
C 3 233 8077861 25313.33 1326 1319 319.1
C 2 114 51615 157.64 1326 1319 319.1
C 14 254 7673 19.91 1326 1319 319.1
D 7 80 1622872 5015.16 1391 1344 323.3
D 8 195 798566 2465.69 1391 1344 323.3
D 12 233 581339 1793.84 1391 1344 323.3

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