ASTROSAT CZTI

Data Quality Report

Orbit 38916

Creation date: 2024-06-27T21:58:08.325223
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/AS1T05_064T01_9000005416_38916cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38916cztM0_level2_quad_clean.evt
Size (bytes)494,012,16090,725,760
Size471.1 MB 86.5 MB
Events in quadrant A3,885,348637,154
Events in quadrant B2,625,278662,746
Events in quadrant C2,773,045640,345
Events in quadrant D8,543,130393,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152413
B0119531
C0119671
D0294471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5916921.555105%
B591670.118323%
C591630.050710%
D5916207034.989858%

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 7231 5918 77 77 1.06% 1.30%
B 7231 5918 2 2 0.03% 0.03%
C 7231 5918 2 2 0.03% 0.03%
D 7230 5916 2034 2034 28.13% 34.38%

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 16 615771 4645.77 646 631 132.4
A 10 83 456767 3444.91 646 631 132.4
A 13 248 211291 1590.99 646 631 132.4
B 5 172 21153 161.99 648 630 126.7
B 12 111 16074 121.9 648 630 126.7
B 0 230 15847 120.11 648 630 126.7
C 15 214 261478 1751.26 637 641 148.9
C 12 249 15559 100.16 637 641 148.9
C 3 233 4942 28.87 637 641 148.9
D 12 227 4160978 33989.24 493 479 122.4
D 2 250 1256224 10258.82 493 479 122.4
D 10 118 394290 3217.24 493 479 122.4

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