ASTROSAT CZTI

Data Quality Report

Orbit 10285

Creation date: 2024-06-27T15:57:26.180956
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/AS1A03_072T01_9000001484_10285cztM0_level2.evt modeM0/AS1A03_072T01_9000001484_10285cztM0_level2_quad_clean.evt
Size (bytes)513,682,56072,532,800
Size489.9 MB 69.2 MB
Events in quadrant A3,565,686443,656
Events in quadrant B3,437,393453,734
Events in quadrant C3,176,147444,136
Events in quadrant D4,937,773402,277

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148902
B0144241
C0139891
D0188601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64811602.468755%
B6481851.311526%
C6481691.064651%
D64814847.467983%

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 7341 6482 115 115 1.57% 1.77%
B 7341 6482 48 48 0.65% 0.74%
C 7341 6482 50 50 0.68% 0.77%
D 7341 6482 466 466 6.35% 7.19%

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 5 16 554024 3612.35 743 727 153.2
A 8 5 74696 482.93 743 727 153.2
A 8 15 46035 295.81 743 727 153.2
B 4 239 413036 2837.67 753 734 145.3
B 10 245 33516 225.62 753 734 145.3
B 11 51 24638 164.52 753 734 145.3
C 4 254 357472 2116.97 720 724 168.5
C 13 61 5310 27.21 720 724 168.5
C 12 4 5280 27.04 720 724 168.5
D 2 16 683917 3696.33 695 679 184.8
D 13 104 575544 3110.03 695 679 184.8
D 12 233 431117 2328.67 695 679 184.8

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