ASTROSAT CZTI

Data Quality Report

Orbit 21286

Creation date: 2024-06-27T18:25:56.765239
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/AS1T03_140T01_9000003142_21286cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21286cztM0_level2_quad_clean.evt
Size (bytes)1,282,037,760221,201,280
Size1.2 GB 211.0 MB
Events in quadrant A8,916,5621,370,321
Events in quadrant B9,292,6971,387,828
Events in quadrant C8,783,0091,353,206
Events in quadrant D10,580,7421,310,364

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383944
B0392264
C0378725
D0438504

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185371861.003399%
B185383011.623692%
C185372491.343259%
D185374472.411393%

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 20737 18539 4 4 0.02% 0.02%
B 20738 18540 63 63 0.30% 0.34%
C 20737 18539 0 0 0.00% 0.00%
D 20737 18538 281 281 1.36% 1.52%

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 95986 208.04 2243 2195 450.8
A 5 16 92781 200.93 2243 2195 450.8
A 9 143 51564 109.51 2243 2195 450.8
B 3 64 300278 702.49 2237 2182 424.3
B 0 230 72817 166.46 2237 2182 424.3
B 12 111 52283 118.07 2237 2182 424.3
C 14 238 336072 665.26 2147 2159 501.9
C 3 233 57605 110.47 2147 2159 501.9
C 13 61 15147 25.88 2147 2159 501.9
D 1 52 845793 1593.99 2166 2107 529.3
D 7 38 746603 1406.59 2166 2107 529.3
D 13 174 200734 375.27 2166 2107 529.3

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