ASTROSAT CZTI

Data Quality Report

Orbit 00930

Creation date: 2024-06-27T14:04:55.730538
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/AS1P01_163T03_9000000186_00930cztM0_level2.evt modeM0/AS1P01_163T03_9000000186_00930cztM0_level2_quad_clean.evt
Size (bytes)1,244,952,000103,561,920
Size1.2 GB 98.8 MB
Events in quadrant A9,929,926657,449
Events in quadrant B9,685,686663,322
Events in quadrant C9,189,260643,294
Events in quadrant D8,386,938634,756

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350290
B0342490
C0327750
D0305050

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7729650.840988%
B7730360.465718%
C7730160.206986%
D7730240.310479%

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 8609 7732 591 591 6.86% 7.64%
B 8610 7733 389 389 4.52% 5.03%
C 8610 7733 265 265 3.08% 3.43%
D 8610 7733 227 227 2.64% 2.94%

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 14 170 924346 1622.79 2347 2362 568.1
A 11 79 9910 13.29 2347 2362 568.1
A 3 111 7756 9.49 2347 2362 568.1
B 8 38 59144 97.71 2484 2494 579.8
B 15 22 56783 93.64 2484 2494 579.8
B 5 249 30330 48.01 2484 2494 579.8
C 15 241 286304 456.62 2235 2309 622.0
C 9 144 71654 111.5 2235 2309 622.0
C 9 52 28222 41.66 2235 2309 622.0
D 1 4 157490 235.15 2138 2213 660.3
D 13 171 133608 198.98 2138 2213 660.3
D 12 188 79235 116.64 2138 2213 660.3

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