ASTROSAT CZTI

Data Quality Report

Orbit 50721

Creation date: 2025-02-12T20:59:18.374659
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/AS1C09_003T01_9000006448_50721cztM0_level2.fits modeM0/AS1C09_003T01_9000006448_50721cztM0_level2_quad_clean.evt
Size (bytes)705,504,96097,963,200
Size672.8 MB 93.4 MB
Events in quadrant A4,041,045675,404
Events in quadrant B4,522,346734,329
Events in quadrant C7,902,612562,715
Events in quadrant D9,082,227483,653

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168180
B0185720
C0285340
D0320420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7324570.778263%
B73242102.867286%
C7325133518.225256%
D7325187525.597270%

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 7324 7324 40 40 0.55% 0.55%
B 7324 7324 111 111 1.52% 1.52%
C 7325 7325 1042 1042 14.23% 14.23%
D 7325 7325 1696 1696 23.15% 23.15%

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 4 3 236111 1234.52 767 748 190.7
A 12 80 157534 822.37 767 748 190.7
A 9 191 88431 459.91 767 748 190.7
B 0 229 276247 1688.9 763 735 163.1
B 0 213 268424 1640.94 763 735 163.1
B 3 249 193842 1183.75 763 735 163.1
C 5 10 1942191 10163.97 691 685 191.0
C 0 224 1095684 5732.42 691 685 191.0
C 0 209 582317 3044.9 691 685 191.0
D 2 249 3504243 19288.16 650 627 181.6
D 8 176 1431946 7879.72 650 627 181.6
D 7 60 333691 1833.59 650 627 181.6

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