ASTROSAT CZTI

Data Quality Report

Orbit 21749

Creation date: 2024-06-27T18:31:46.476769
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/AS1A07_005T01_9000003224_21749cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21749cztM0_level2_quad_clean.evt
Size (bytes)1,783,615,680183,648,960
Size1.7 GB 175.1 MB
Events in quadrant A7,921,7211,178,857
Events in quadrant B8,350,1571,206,707
Events in quadrant C7,594,1781,150,637
Events in quadrant D29,071,191918,193

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336143
B0345123
C0327003
D0974243

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160302651.653150%
B160313442.145842%
C160312931.827709%
D16031820951.207036%

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 17340 16033 20 20 0.12% 0.12%
B 17341 16034 42 42 0.24% 0.26%
C 17341 16034 0 0 0.00% 0.00%
D 17341 16032 6747 6747 38.91% 42.08%

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 15 236 226304 574.24 1945 1904 390.8
A 13 170 171587 434.22 1945 1904 390.8
A 13 254 28419 67.85 1945 1904 390.8
B 3 64 246465 656.12 1947 1895 372.8
B 0 190 141417 374.3 1947 1895 372.8
B 0 189 110391 291.07 1947 1895 372.8
C 14 238 289794 652.43 1874 1878 441.3
C 13 61 13241 25.75 1874 1878 441.3
C 15 78 4601 6.17 1874 1878 441.3
D 7 238 20125386 53620.36 1542 1495 375.3
D 1 52 1576467 4196.53 1542 1495 375.3
D 12 235 867658 2307.9 1542 1495 375.3

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