ASTROSAT CZTI

Data Quality Report

Orbit 41957

Creation date: 2024-06-27T22:34:59.873437
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_101T01_9000005722_41957cztM0_level2.fits modeM0/AS1A12_101T01_9000005722_41957cztM0_level2_quad_clean.evt
Size (bytes)195,071,04058,636,800
Size186.0 MB 55.9 MB
Events in quadrant A1,841,326394,089
Events in quadrant B1,722,171397,384
Events in quadrant C1,623,390378,724
Events in quadrant D1,752,185350,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076341
B076851
C072031
D078881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A359570.194715%
B3595401.112656%
C359510.027816%
D3596180.500556%

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 5298 3596 1 1 0.02% 0.03%
B 5298 3596 35 35 0.66% 0.97%
C 5298 3596 0 0 0.00% 0.00%
D 5299 3597 16 16 0.30% 0.44%

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 334473 4193.01 385 377 79.7
A 2 79 10692 129.46 385 377 79.7
A 13 6 8045 96.24 385 377 79.7
B 5 255 166725 2240.53 378 369 74.2
B 0 190 38159 508.97 378 369 74.2
B 3 112 13159 172.26 378 369 74.2
C 15 214 156799 1762.74 376 378 88.7
C 13 61 2468 23.55 376 378 88.7
C 14 67 1385 11.35 376 378 88.7
D 13 249 107835 1159.43 378 366 92.7
D 12 218 53214 570.15 378 366 92.7
D 2 120 50539 541.29 378 366 92.7

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