ASTROSAT CZTI

Data Quality Report

Orbit 32675

Creation date: 2024-06-27T20:40:42.102735
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/AS1A10_057T03_9000004722_32675cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32675cztM0_level2_quad_clean.evt
Size (bytes)685,368,00061,231,680
Size653.6 MB 58.4 MB
Events in quadrant A3,688,066373,947
Events in quadrant B4,372,030362,082
Events in quadrant C3,623,447366,926
Events in quadrant D8,670,638335,048

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148993
B0169792
C0145322
D0298152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59464407.399933%
B59461352.270434%
C59461752.943155%
D5946210335.368315%

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 7318 5944 167 167 2.28% 2.81%
B 7318 5946 78 78 1.07% 1.31%
C 7318 5946 148 148 2.02% 2.49%
D 7318 5946 1739 1739 23.76% 29.25%

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 15 249 1004329 7429.18 666 653 135.1
A 15 174 38912 283.19 666 653 135.1
A 7 16 38614 280.99 666 653 135.1
B 3 26 627638 4689.45 700 685 133.7
B 0 219 519113 3877.71 700 685 133.7
B 4 251 160442 1194.94 700 685 133.7
C 9 236 329525 2086.3 669 673 157.6
C 0 10 323342 2047.07 669 673 157.6
C 9 54 131999 833.16 669 673 157.6
D 7 38 3715317 27212.82 567 555 136.5
D 8 195 842025 6164.26 567 555 136.5
D 7 80 659889 4830.01 567 555 136.5

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