ASTROSAT CZTI

Data Quality Report

Orbit 36588

Creation date: 2024-06-27T21:28:49.123424
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/AS1A11_097T24_9000005224_36588cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36588cztM0_level2_quad_clean.evt
Size (bytes)1,138,314,240201,473,280
Size1.1 GB 192.1 MB
Events in quadrant A7,967,0841,287,990
Events in quadrant B7,531,3731,300,741
Events in quadrant C8,519,2911,241,833
Events in quadrant D9,410,8271,204,081

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337975
B0326754
C0348644
D0388274

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154761701.098475%
B15476740.478160%
C154762541.641251%
D154763041.964332%

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 19745 15479 89 89 0.45% 0.57%
B 19745 15479 21 21 0.11% 0.14%
C 19745 15479 176 176 0.89% 1.14%
D 19745 15479 237 237 1.20% 1.53%

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 15 223 554273 1558.99 1776 1743 354.4
A 10 83 484356 1361.72 1776 1743 354.4
A 9 143 44773 121.41 1776 1743 354.4
B 0 213 106229 309.24 1767 1718 338.0
B 5 255 103444 301.0 1767 1718 338.0
B 15 85 81960 237.43 1767 1718 338.0
C 0 10 816008 2054.26 1711 1725 396.4
C 15 214 655581 1649.54 1711 1725 396.4
C 14 254 349394 877.09 1711 1725 396.4
D 12 235 493861 1178.2 1713 1668 417.7
D 12 16 412769 984.08 1713 1668 417.7
D 2 250 344777 821.33 1713 1668 417.7

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