ASTROSAT CZTI

Data Quality Report

Orbit 17784

Creation date: 2024-06-27T17:40:51.632445
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_015T01_9000002650_17784cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17784cztM0_level2_quad_clean.evt
Size (bytes)465,321,60077,659,200
Size443.8 MB 74.1 MB
Events in quadrant A3,106,377481,085
Events in quadrant B3,313,272486,341
Events in quadrant C3,181,263469,039
Events in quadrant D4,051,475463,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135893
B0141852
C0138022
D0164372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6475771.189189%
B6475971.498069%
C6475911.405405%
D64751612.486486%

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 7495 6476 8 8 0.11% 0.12%
B 7495 6475 8 8 0.11% 0.12%
C 7495 6475 0 0 0.00% 0.00%
D 7495 6475 87 87 1.16% 1.34%

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 40658 246.0 797 778 162.1
A 0 226 6815 37.24 797 778 162.1
A 12 194 5884 31.5 797 778 162.1
B 7 220 57275 369.89 798 777 152.7
B 15 35 43298 278.38 798 777 152.7
B 3 209 33721 215.68 798 777 152.7
C 14 238 119478 657.2 771 777 180.6
C 3 233 44320 241.08 771 777 180.6
C 1 16 8717 43.96 771 777 180.6
D 7 238 745452 3982.16 777 757 187.0
D 1 52 226568 1207.49 777 757 187.0
D 8 195 79132 419.1 777 757 187.0

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