ASTROSAT CZTI

Data Quality Report

Orbit 03141

Creation date: 2024-06-27T14:25:09.453230
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/AS1T01_118T01_9000000430_03141cztM0_level2.evt modeM0/AS1T01_118T01_9000000430_03141cztM0_level2_quad_clean.evt
Size (bytes)404,205,12064,134,720
Size385.5 MB 61.2 MB
Events in quadrant A2,813,694391,021
Events in quadrant B2,885,557395,283
Events in quadrant C3,111,944388,671
Events in quadrant D3,044,682370,407

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119332
B0120301
C0127471
D0128171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56661001.764914%
B5666791.394282%
C5666911.606071%
D56661352.382633%

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 6926 5667 7 7 0.10% 0.12%
B 6926 5666 2 2 0.03% 0.04%
C 6926 5667 25 25 0.36% 0.44%
D 6926 5666 63 63 0.91% 1.11%

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 0 31 55798 386.07 702 688 142.7
A 12 247 43071 296.91 702 688 142.7
A 12 194 7684 49.01 702 688 142.7
B 2 249 53419 390.18 706 691 135.1
B 4 81 38830 282.22 706 691 135.1
B 12 0 36795 267.17 706 691 135.1
C 0 219 186729 1174.4 684 690 158.4
C 14 223 122695 770.17 684 690 158.4
C 1 16 64270 401.36 684 690 158.4
D 13 223 232687 1435.36 680 660 161.7
D 2 136 103489 636.12 680 660 161.7
D 5 233 46170 281.53 680 660 161.7

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