ASTROSAT CZTI

Data Quality Report

Orbit 08287

Creation date: 2024-06-27T15:30:35.672421
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/AS1G07_065T02_9000001150_08287cztM0_level2.evt modeM0/AS1G07_065T02_9000001150_08287cztM0_level2_quad_clean.evt
Size (bytes)282,692,16050,757,120
Size269.6 MB 48.4 MB
Events in quadrant A1,965,218312,685
Events in quadrant B2,282,380314,212
Events in quadrant C1,945,565310,352
Events in quadrant D2,075,476297,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087512
B095422
C087312
D091392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4284150.350140%
B4284561.307190%
C428460.140056%
D4284350.816993%

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 4554 4286 0 0 0.00% 0.00%
B 4554 4286 16 16 0.35% 0.37%
C 4554 4286 0 0 0.00% 0.00%
D 4554 4285 14 14 0.31% 0.33%

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 0 226 4923 41.73 509 496 106.1
A 12 194 4411 36.91 509 496 106.1
A 5 112 3078 24.34 509 496 106.1
B 11 51 140776 1425.17 512 498 98.4
B 4 81 75253 759.48 512 498 98.4
B 0 214 36644 367.23 512 498 98.4
C 10 9 4525 34.63 497 498 116.3
C 13 61 3818 28.55 497 498 116.3
C 9 54 1503 8.64 497 498 116.3
D 7 71 52652 389.91 491 480 133.8
D 12 233 52645 389.86 491 480 133.8
D 1 52 26623 195.38 491 480 133.8

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