ASTROSAT CZTI

Data Quality Report

Orbit 42519

Creation date: 2024-06-27T22:41:08.280747
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/AS1A07_041T01_9000005808_42519cztM0_level2.fits modeM0/AS1A07_041T01_9000005808_42519cztM0_level2_quad_clean.evt
Size (bytes)282,579,84086,031,360
Size269.5 MB 82.0 MB
Events in quadrant A2,722,584576,743
Events in quadrant B2,321,452590,505
Events in quadrant C2,605,461568,029
Events in quadrant D2,424,700523,238

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109922
B0102842
C0107122
D0107882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4945100.202224%
B4945310.626896%
C4945691.395349%
D4945641.294237%

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 9189 4947 1 1 0.01% 0.02%
B 9189 4947 17 17 0.19% 0.34%
C 9189 4947 70 70 0.76% 1.41%
D 9189 4947 38 38 0.41% 0.77%

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 512863 4541.06 554 544 112.8
A 12 189 39095 341.71 554 544 112.8
A 13 248 8623 71.61 554 544 112.8
B 0 245 111055 1036.4 549 533 106.6
B 5 255 32562 300.35 549 533 106.6
B 5 252 14064 126.88 549 533 106.6
C 0 239 273654 2193.24 539 543 124.5
C 15 214 224163 1795.8 539 543 124.5
C 14 254 3596 24.52 539 543 124.5
D 12 6 154816 1181.29 539 523 130.6
D 13 249 72730 552.83 539 523 130.6
D 2 249 34076 256.89 539 523 130.6

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