ASTROSAT CZTI

Data Quality Report

Orbit 13719

Creation date: 2024-06-27T16:45:10.076667
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/AS1T02_041T01_9000002032_13719cztM0_level2.evt modeM0/AS1T02_041T01_9000002032_13719cztM0_level2_quad_clean.evt
Size (bytes)242,303,04072,861,120
Size231.1 MB 69.5 MB
Events in quadrant A1,603,463473,064
Events in quadrant B1,961,018491,451
Events in quadrant C1,745,699506,942
Events in quadrant D1,778,704477,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A074181
B083041
C076641
D079141

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A363750.137476%
B3637170.467418%
C363720.054990%
D3637130.357437%

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 4763 3639 2 2 0.04% 0.05%
B 4763 3639 6 6 0.13% 0.16%
C 4763 3639 2 2 0.04% 0.05%
D 4763 3639 10 10 0.21% 0.27%

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 15 222 5558 60.8 413 403 84.8
A 15 69 5384 58.74 413 403 84.8
A 1 162 4000 42.42 413 403 84.8
B 8 250 209719 2647.56 422 410 79.1
B 10 244 47807 599.53 422 410 79.1
B 3 64 16576 204.48 422 410 79.1
C 3 233 67612 698.12 417 420 96.2
C 12 4 49802 513.08 417 420 96.2
C 13 61 3112 27.97 417 420 96.2
D 8 195 98932 1013.28 407 396 97.2
D 5 222 88267 903.6 407 396 97.2
D 10 157 29270 296.92 407 396 97.2

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