ASTROSAT CZTI

Data Quality Report

Orbit 41498

Creation date: 2024-06-27T22:29:48.539691
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/AS1A12_035T02_9000005676_41498cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41498cztM0_level2_quad_clean.evt
Size (bytes)778,060,800161,049,600
Size742.0 MB 153.6 MB
Events in quadrant A5,647,9761,124,896
Events in quadrant B4,863,1901,137,567
Events in quadrant C5,818,3311,070,482
Events in quadrant D11,666,538823,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228193
B0215142
C0236922
D0417272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10388670.644975%
B10388490.471698%
C103883042.926454%
D10388226321.784752%

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 13435 10390 33 33 0.25% 0.32%
B 13435 10390 29 29 0.22% 0.28%
C 13435 10390 287 287 2.14% 2.76%
D 13435 10390 1984 1984 14.77% 19.10%

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 10 83 925338 3952.92 1143 1118 233.8
A 13 248 219293 933.14 1143 1118 233.8
A 2 79 55732 233.59 1143 1118 233.8
B 0 190 212772 972.57 1132 1099 217.6
B 0 245 138505 631.33 1132 1099 217.6
B 12 111 28097 124.05 1132 1099 217.6
C 0 10 700044 2749.12 1095 1103 254.2
C 15 214 429616 1685.46 1095 1103 254.2
C 14 254 204009 798.08 1095 1103 254.2
D 12 16 5860140 24033.88 991 959 243.8
D 12 79 773713 3169.77 991 959 243.8
D 1 47 342857 1402.44 991 959 243.8

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