ASTROSAT CZTI

Data Quality Report

Orbit 21378

Creation date: 2024-06-27T18:27:04.833868
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/AS1C04_001T01_9000003156_21378cztM0_level2.evt modeM0/AS1C04_001T01_9000003156_21378cztM0_level2_quad_clean.evt
Size (bytes)611,896,320113,783,040
Size583.5 MB 108.5 MB
Events in quadrant A4,110,331795,556
Events in quadrant B3,189,352809,959
Events in quadrant C2,955,374755,154
Events in quadrant D7,877,697673,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159381
B0130921
C0122871
D0274571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58933566.041066%
B5894941.594842%
C5894821.391245%
D5894167328.384798%

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 7178 5893 244 244 3.40% 4.14%
B 7179 5894 15 15 0.21% 0.25%
C 7179 5894 0 0 0.00% 0.00%
D 7179 5894 1592 1592 22.18% 27.01%

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 1030282 6914.79 762 749 148.9
A 10 253 67132 445.86 762 749 148.9
A 15 174 59383 393.81 762 749 148.9
B 0 189 66359 470.92 757 741 139.3
B 0 230 58725 416.13 757 741 139.3
B 0 190 45651 322.3 757 741 139.3
C 14 238 117078 707.59 720 725 164.4
C 10 91 31276 185.79 720 725 164.4
C 13 61 5158 26.96 720 725 164.4
D 1 52 4476203 27987.57 666 649 159.9
D 12 235 232212 1448.06 666 649 159.9
D 11 135 214770 1338.99 666 649 159.9

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