ASTROSAT CZTI

Data Quality Report

Orbit 16745

Creation date: 2024-06-27T17:27:07.181817
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_202T01_9000002484_16745cztM0_level2.evt modeM0/AS1A05_202T01_9000002484_16745cztM0_level2_quad_clean.evt
Size (bytes)616,343,040101,891,520
Size587.8 MB 97.2 MB
Events in quadrant A3,411,367696,199
Events in quadrant B3,448,911703,690
Events in quadrant C3,217,811673,669
Events in quadrant D8,173,795584,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141152
B0141741
C0135281
D0286781

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120951.552288%
B6120991.617647%
C6120921.503268%
D6120126520.669935%

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 7386 6122 30 30 0.41% 0.49%
B 7386 6122 24 24 0.32% 0.39%
C 7386 6122 5 5 0.07% 0.08%
D 7386 6122 1076 1076 14.57% 17.58%

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 326509 2055.77 799 786 158.4
A 9 143 7651 43.33 799 786 158.4
A 0 226 7178 40.34 799 786 158.4
B 15 35 137008 941.34 793 776 144.7
B 5 236 67334 459.9 793 776 144.7
B 7 220 42000 284.85 793 776 144.7
C 14 238 122846 704.54 760 763 173.3
C 0 207 58380 332.51 760 763 173.3
C 7 247 44716 253.65 760 763 173.3
D 1 52 4498070 25794.33 720 700 174.4
D 2 16 280081 1602.37 720 700 174.4
D 10 70 275734 1577.44 720 700 174.4

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