ASTROSAT CZTI

Data Quality Report

Orbit 51045

Creation date: 2025-03-06T14:05:40.909212
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/AS1C07_001T02_9000006452_51045cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51045cztM0_level2_quad_clean.evt
Size (bytes)614,496,96084,072,960
Size586.0 MB 80.2 MB
Events in quadrant A6,414,189548,093
Events in quadrant B3,678,703621,024
Events in quadrant C5,905,520496,540
Events in quadrant D6,288,964465,295

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233181
B0151801
C0217031
D0229191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59374607.748021%
B59372063.469766%
C593775012.632643%
D593786114.502274%

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 7107 5937 314 314 4.42% 5.29%
B 7107 5938 114 114 1.60% 1.92%
C 7107 5937 698 698 9.82% 11.76%
D 7107 5938 834 834 11.73% 14.05%

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 12 3 1990216 12806.93 612 597 155.4
A 10 253 538585 3462.96 612 597 155.4
A 12 194 223531 1435.0 612 597 155.4
B 4 81 317952 2466.07 615 597 128.7
B 12 32 235419 1824.73 615 597 128.7
B 10 247 157672 1220.58 615 597 128.7
C 12 249 1009289 6427.16 572 570 156.9
C 15 254 927952 5908.91 572 570 156.9
C 15 1 285686 1816.65 572 570 156.9
D 8 176 1888858 11670.11 568 548 161.8
D 11 192 424594 2620.68 568 548 161.8
D 15 170 401677 2479.05 568 548 161.8

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