ASTROSAT CZTI

Data Quality Report

Orbit 39250

Creation date: 2024-06-27T22:02:19.291554
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_093T02_9000005452_39250cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39250cztM0_level2_quad_clean.evt
Size (bytes)535,072,32094,821,120
Size510.3 MB 90.4 MB
Events in quadrant A3,399,845667,330
Events in quadrant B3,754,350658,809
Events in quadrant C2,886,099651,929
Events in quadrant D9,295,905469,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138963
B0151332
C0122722
D0317962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6059901.485394%
B60592834.670738%
C605970.115531%
D6059188531.110744%

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 7342 6060 70 70 0.95% 1.16%
B 7342 6060 202 202 2.75% 3.33%
C 7342 6060 1 1 0.01% 0.02%
D 7342 6060 1669 1669 22.73% 27.54%

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 459717 3326.34 674 661 138.0
A 13 248 315227 2279.36 674 661 138.0
A 10 248 8504 56.83 674 661 138.0
B 5 172 706820 5495.97 657 637 128.5
B 5 255 254909 1978.91 657 637 128.5
B 5 184 134090 1038.62 657 637 128.5
C 15 214 271505 1729.77 662 665 156.6
C 3 233 18670 114.99 662 665 156.6
C 0 10 9172 54.33 662 665 156.6
D 12 235 6369849 43819.87 594 576 145.4
D 5 222 329617 2263.76 594 576 145.4
D 2 250 114875 786.36 594 576 145.4

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