ASTROSAT CZTI

Data Quality Report

Orbit 17473

Creation date: 2024-06-27T17:36:57.365290
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_196T01_9000002584_17473cztM0_level2.evt modeM0/AS1A05_196T01_9000002584_17473cztM0_level2_quad_clean.evt
Size (bytes)496,823,04084,608,640
Size473.8 MB 80.7 MB
Events in quadrant A3,155,339542,375
Events in quadrant B3,210,080547,318
Events in quadrant C3,245,408521,867
Events in quadrant D4,996,624499,747

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134431
B0134581
C0137171
D0192151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64581111.718798%
B64591191.842390%
C64591271.966249%
D645966210.249265%

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 7333 6458 2 2 0.03% 0.03%
B 7334 6459 0 0 0.00% 0.00%
C 7334 6460 0 0 0.00% 0.00%
D 7334 6460 485 485 6.61% 7.51%

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 24007 141.36 811 794 164.2
A 4 2 9937 55.68 811 794 164.2
A 0 226 7311 39.69 811 794 164.2
B 0 189 29605 185.55 808 787 155.3
B 12 111 17929 110.37 808 787 155.3
B 11 111 15249 93.12 808 787 155.3
C 14 238 121059 665.05 773 781 180.9
C 7 220 68695 375.51 773 781 180.9
C 5 218 33987 183.6 773 781 180.9
D 7 238 1611583 8940.43 746 726 180.2
D 10 70 307556 1702.94 746 726 180.2
D 11 176 59007 323.47 746 726 180.2

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