ASTROSAT CZTI

Data Quality Report

Orbit 41731

Creation date: 2024-06-27T22:32:10.080578
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_070T01_9000005694_41731cztM0_level2.fits modeM0/AS1A12_070T01_9000005694_41731cztM0_level2_quad_clean.evt
Size (bytes)209,226,24058,763,520
Size199.5 MB 56.0 MB
Events in quadrant A1,933,587393,057
Events in quadrant B1,693,225403,589
Events in quadrant C1,977,344371,409
Events in quadrant D1,850,291349,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079381
B077341
C083451
D083241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3708170.458468%
B3708160.431499%
C37081123.020496%
D3708651.752967%

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 3708 3708 12 12 0.32% 0.32%
B 3708 3708 9 9 0.24% 0.24%
C 3708 3708 109 109 2.94% 2.94%
D 3708 3708 59 59 1.59% 1.59%

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 369005 4554.59 390 382 80.9
A 6 10 29120 355.08 390 382 80.9
A 15 223 9344 110.73 390 382 80.9
B 0 186 100577 1340.02 384 374 74.8
B 15 85 41415 548.84 384 374 74.8
B 0 245 16584 216.78 384 374 74.8
C 0 10 383579 4491.49 366 367 85.3
C 15 214 149867 1752.24 366 367 85.3
C 12 249 7483 83.4 366 367 85.3
D 2 249 109496 1195.45 373 361 91.3
D 13 249 107279 1171.17 373 361 91.3
D 12 6 74648 813.73 373 361 91.3

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