ASTROSAT CZTI

Data Quality Report

Orbit 20231025_A12_018T01_9000005896_level2

Creation date: 2023-10-28T11:15:54.550839
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/AS1A12_018T01_9000005896cztM0_level2.fits modeM0/AS1A12_018T01_9000005896cztM0_level2_quad_clean.evt
Size (bytes)838,465,920908,916,480
Size799.6 MB 866.8 MB
Events in quadrant A5,450,4246,511,544
Events in quadrant B5,616,2827,165,519
Events in quadrant C2,639,1121,804,960
Events in quadrant D4,023,6684,441,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022460
B022460
C022460
D022460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05409610
B02697340
C08217980
D05293940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1108581426412.866911%
B11085831242.818019%
C1108578710078.569689%
D1108573386930.551972%

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 127385 110855 0 0 0.00% 0.00%
B 127385 110851 0 0 0.00% 0.00%
C 127385 106716 0 0 0.00% 0.00%
D 127385 109069 0 0 0.00% 0.00%

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 7 110 4552 9.19 1428 1344 348.9
A 0 29 4445 8.89 1428 1344 348.9
A 0 30 4288 8.44 1428 1344 348.9
B 2 9 5099 12.6 1492 1422 291.9
B 3 17 4102 9.18 1492 1422 291.9
B 2 8 4067 9.06 1492 1422 291.9
C 3 202 2124 8.29 700 655 177.1
C 3 203 2031 7.77 700 655 177.1
C 12 241 1809 6.52 700 655 177.1
D 10 189 3000 6.05 1173 1067 319.5
D 7 3 2999 6.05 1173 1067 319.5
D 6 67 2955 5.91 1173 1067 319.5

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