ASTROSAT CZTI

Data Quality Report

Orbit 41501

Creation date: 2024-06-27T22:29:50.340015
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_035T02_9000005676_41501cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41501cztM0_level2_quad_clean.evt
Size (bytes)347,431,68090,322,560
Size331.3 MB 86.1 MB
Events in quadrant A2,899,443624,379
Events in quadrant B2,572,970631,851
Events in quadrant C3,803,502557,205
Events in quadrant D3,177,597554,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117963
B0111872
C0145932
D0127502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5231150.286752%
B5231160.305869%
C52313506.690881%
D5231841.605812%

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 7053 5232 6 6 0.09% 0.11%
B 7053 5232 4 4 0.06% 0.08%
C 7053 5232 328 328 4.65% 6.27%
D 7053 5232 73 73 1.04% 1.40%

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 530268 4330.3 597 585 122.3
A 2 79 33037 265.3 597 585 122.3
A 9 254 15950 125.61 597 585 122.3
B 0 190 165236 1460.36 592 576 112.8
B 0 245 51411 450.85 592 576 112.8
B 4 141 15830 135.29 592 576 112.8
C 0 10 623745 4886.68 552 555 127.5
C 3 233 440751 3451.75 552 555 127.5
C 15 214 215719 1687.19 552 555 127.5
D 12 79 422149 3001.46 574 558 140.5
D 12 6 175208 1243.4 574 558 140.5
D 12 128 88738 627.79 574 558 140.5

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