ASTROSAT CZTI

Data Quality Report

Orbit 16625

Creation date: 2024-06-27T17:25:17.579585
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/AS1A05_064T01_9000002450_16625cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16625cztM0_level2_quad_clean.evt
Size (bytes)1,183,147,200185,160,960
Size1.1 GB 176.6 MB
Events in quadrant A5,771,7751,282,439
Events in quadrant B5,436,9501,304,366
Events in quadrant C13,753,3311,107,452
Events in quadrant D10,155,6091,177,968

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244403
B0228642
C0482332
D0375032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106124133.891821%
B106121131.064832%
C10612313929.579721%
D106129488.933283%

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 12143 10615 198 198 1.63% 1.87%
B 12143 10615 17 17 0.14% 0.16%
C 12143 10615 2332 2332 19.20% 21.97%
D 12143 10615 768 768 6.32% 7.24%

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 15 174 970382 3912.86 1230 1201 247.7
A 9 143 55395 218.8 1230 1201 247.7
A 15 223 11855 43.01 1230 1201 247.7
B 15 35 148735 632.12 1230 1196 233.4
B 0 189 85576 361.52 1230 1196 233.4
B 0 198 75311 317.54 1230 1196 233.4
C 3 233 9249455 36804.2 1081 1086 251.3
C 14 238 162022 640.45 1081 1086 251.3
C 7 247 107457 423.31 1081 1086 251.3
D 1 52 5173523 17983.14 1172 1133 287.6
D 10 70 161226 556.6 1172 1133 287.6
D 5 222 138002 475.86 1172 1133 287.6

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