ASTROSAT CZTI

Data Quality Report

Orbit 39583

Creation date: 2024-06-27T22:06:27.243971
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_018T01_9000005488_39583cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39583cztM0_level2_quad_clean.evt
Size (bytes)612,506,88083,761,920
Size584.1 MB 79.9 MB
Events in quadrant A4,384,914636,728
Events in quadrant B2,663,881660,789
Events in quadrant C12,277,268236,234
Events in quadrant D2,881,931584,576

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168573
B0123522
C0405432
D0129052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59801692.826087%
B5980390.652174%
C5980399266.755853%
D5980220.367893%

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 7293 5981 131 131 1.80% 2.19%
B 7293 5981 21 21 0.29% 0.35%
C 7293 5981 3404 3404 46.67% 56.91%
D 7293 5981 19 19 0.26% 0.32%

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 15 222 754475 5879.82 629 615 128.2
A 9 143 601979 4690.41 629 615 128.2
A 10 83 461272 3592.95 629 615 128.2
B 5 255 169977 1365.38 632 613 124.0
B 12 111 15765 122.15 632 613 124.0
B 11 111 14255 109.98 632 613 124.0
C 15 208 6523150 64913.59 429 432 100.5
C 9 187 3810507 37917.58 429 432 100.5
C 15 214 190753 1894.06 429 432 100.5
D 12 0 124303 822.07 619 600 150.5
D 1 52 83221 549.06 619 600 150.5
D 12 233 80020 527.78 619 600 150.5

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