ASTROSAT CZTI

Data Quality Report

Orbit 47919

Creation date: 2024-08-08T00:09:43.222341
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/AS1A13_025T02_9000006380_47919cztM0_level2.fits modeM0/AS1A13_025T02_9000006380_47919cztM0_level2_quad_clean.evt
Size (bytes)621,665,280131,011,200
Size592.9 MB 124.9 MB
Events in quadrant A9,852,432812,611
Events in quadrant B4,129,557900,075
Events in quadrant C4,032,736863,716
Events in quadrant D4,341,097801,972

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03514832
B0181294
C0183247
D0189576

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A846294811.203025%
B84661742.055280%
C84661702.008032%
D84651561.842882%

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 9848 8467 541 541 5.49% 6.39%
B 9848 8469 13 13 0.13% 0.15%
C 9848 8470 60 60 0.61% 0.71%
D 9848 8469 44 44 0.45% 0.52%

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 4841202 25381.88 915 893 190.7
A 13 248 1472727 7718.09 915 893 190.7
A 3 137 11060 53.31 915 893 190.7
B 0 200 242546 1286.11 945 918 187.9
B 7 221 29171 150.38 945 918 187.9
B 0 198 26406 135.66 945 918 187.9
C 11 16 158050 709.18 933 937 221.5
C 12 2 136083 610.03 933 937 221.5
C 14 254 72267 321.97 933 937 221.5
D 14 34 266344 1133.95 939 911 234.1
D 2 37 156989 666.78 939 911 234.1
D 2 249 138892 589.46 939 911 234.1

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