ASTROSAT CZTI

Data Quality Report

Orbit 39262

Creation date: 2024-06-27T22:02:27.073661
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_025T11_9000005454_39262cztM0_level2.fits modeM0/AS1A12_025T11_9000005454_39262cztM0_level2_quad_clean.evt
Size (bytes)221,106,24031,104,000
Size210.9 MB 29.7 MB
Events in quadrant A1,128,195240,875
Events in quadrant B1,329,475233,581
Events in quadrant C1,156,509229,240
Events in quadrant D4,407,30688,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045682
B052681
C047071
D0145111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A206950.241663%
B20691105.316578%
C206940.193330%
D2069133864.668922%

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 3680 2070 2 2 0.05% 0.10%
B 3680 2069 75 75 2.04% 3.62%
C 3680 2070 0 0 0.00% 0.00%
D 3680 2070 1212 1212 32.93% 58.55%

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 191340 3752.78 242 237 50.9
A 13 254 2835 51.02 242 237 50.9
A 3 137 2599 46.38 242 237 50.9
B 5 172 357442 7658.45 232 226 46.6
B 0 190 17514 370.64 232 226 46.6
B 15 85 16211 342.71 232 226 46.6
C 3 233 146855 2595.89 233 234 56.5
C 15 214 94631 1671.27 233 234 56.5
C 0 10 3752 62.29 233 234 56.5
D 12 235 3272425 79802.06 161 156 41.0
D 12 227 365118 8900.47 161 156 41.0
D 2 120 50004 1215.66 161 156 41.0

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