ASTROSAT CZTI

Data Quality Report

Orbit 46846

Creation date: 2024-06-27T23:28:25.469763
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/AS1A13_053T01_9000006274_46846cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46846cztM0_level2_quad_clean.evt
Size (bytes)522,596,16096,937,920
Size498.4 MB 92.4 MB
Events in quadrant A6,182,185648,895
Events in quadrant B3,707,231671,613
Events in quadrant C2,956,241653,670
Events in quadrant D6,011,176521,515

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221751
B0150901
C0134561
D0222302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62942083.304735%
B6294881.398157%
C6294350.556085%
D6293102116.224376%

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 7084 6295 68 68 0.96% 1.08%
B 7084 6295 32 32 0.45% 0.51%
C 7084 6295 18 18 0.25% 0.29%
D 7084 6295 883 883 12.46% 14.03%

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 3054227 21391.25 682 666 142.7
A 9 191 202359 1412.93 682 666 142.7
A 15 235 160559 1120.11 682 666 142.7
B 3 112 916286 6751.95 679 658 135.6
B 0 198 30661 221.25 679 658 135.6
B 12 111 17363 123.18 679 658 135.6
C 1 241 146204 914.21 673 676 159.2
C 14 254 124724 779.27 673 676 159.2
C 3 233 57823 359.0 673 676 159.2
D 13 249 2691665 16928.64 636 615 159.0
D 1 52 466897 2933.25 636 615 159.0
D 12 233 283884 1781.97 636 615 159.0

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