ASTROSAT CZTI

Data Quality Report

Orbit 20201209_A10_024T01_9000004062_level2

Creation date: 2021-01-07T00:24:39.485970
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_024T01_9000004062cztM0_level2_bc.evt modeM0/AS1A10_024T01_9000004062cztM0_level2_quad_clean.evt
Size (bytes)1,088,680,320344,413,440
Size1.0 GB 328.5 MB
Events in quadrant A5,175,0222,250,460
Events in quadrant B6,275,6142,244,521
Events in quadrant C5,115,0842,156,666
Events in quadrant D14,676,3352,038,046

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05200
B05200
C05200
D05200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0523500
B0560700
C0531280
D0837780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A253242771.093824%
B253244121.626915%
C253244271.686148%
D2532416226.404991%

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 27649 25323 0 0 0.00% 0.00%
B 27649 25324 0 0 0.00% 0.00%
C 27649 25325 4 4 0.01% 0.02%
D 27649 25324 509 509 1.84% 2.01%

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 13 254 40975 135.86 1315 1289 292.1
A 5 203 25436 82.66 1315 1289 292.1
A 15 174 22377 72.19 1315 1289 292.1
B 10 245 526220 2086.9 1310 1281 251.5
B 0 190 106924 419.99 1310 1281 251.5
B 4 200 102027 400.52 1310 1281 251.5
C 2 16 160771 538.54 1248 1240 296.2
C 3 233 137231 459.07 1248 1240 296.2
C 15 208 14125 43.5 1248 1240 296.2
D 1 52 4467351 15265.65 1250 1206 292.6
D 7 223 2505625 8560.31 1250 1206 292.6
D 8 195 871693 2975.4 1250 1206 292.6

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