ASTROSAT CZTI

Data Quality Report

Orbit 21049

Creation date: 2024-06-27T18:22:56.974763
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_104T04_9000003108_21049cztM0_level2.evt modeM0/AS1A05_104T04_9000003108_21049cztM0_level2_quad_clean.evt
Size (bytes)247,829,76039,473,280
Size236.3 MB 37.6 MB
Events in quadrant A1,813,484231,866
Events in quadrant B1,843,134235,589
Events in quadrant C1,795,894223,810
Events in quadrant D1,779,884221,877

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080050
B080190
C080050
D081310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A398920.050138%
B398950.125345%
C3990130.325815%
D399030.075188%

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 3989 3989 0 0 0.00% 0.00%
B 3989 3989 0 0 0.00% 0.00%
C 3990 3990 0 0 0.00% 0.00%
D 3990 3990 4 4 0.10% 0.10%

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 13 254 4557 42.77 470 461 95.8
A 0 226 4054 37.52 470 461 95.8
A 13 252 4030 37.27 470 461 95.8
B 12 111 10949 116.18 465 453 90.3
B 11 111 9500 100.14 465 453 90.3
B 14 111 8427 88.27 465 453 90.3
C 14 238 69529 661.29 443 445 104.5
C 13 61 3070 25.13 443 445 104.5
C 3 202 1030 5.6 443 445 104.5
D 1 52 63854 569.88 451 438 111.3
D 2 234 15014 130.99 451 438 111.3
D 13 172 7750 65.71 451 438 111.3

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