ASTROSAT CZTI

Data Quality Report

Orbit 34855

Creation date: 2022-03-10T04:14:42.290533
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/AS1C07_005T01_9000004992_34855cztM0_level2.evt modeM0/AS1C07_005T01_9000004992_34855cztM0_level2_quad_clean.evt
Size (bytes)954,515,52077,287,680
Size910.3 MB 73.7 MB
Events in quadrant A11,196,155396,481
Events in quadrant B8,062,567482,014
Events in quadrant C3,817,881565,388
Events in quadrant D5,486,299533,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367173
B0273812
C0145912
D0199822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5146375672.988729%
B5146248248.231636%
C51463075.965799%
D51464869.444229%

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 7118 5146 3513 3513 49.35% 68.27%
B 7118 5146 2217 2217 31.15% 43.08%
C 7118 5147 281 281 3.95% 5.46%
D 7118 5147 532 532 7.47% 10.34%

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 15 169 9288235 98499.49 474 467 94.3
A 10 83 38264 400.85 474 467 94.3
A 15 237 20602 213.54 474 467 94.3
B 5 31 1673021 17173.06 523 512 97.4
B 5 15 1669535 17137.26 523 512 97.4
B 5 14 1667575 17117.14 523 512 97.4
C 0 207 973275 7161.59 593 597 135.8
C 0 10 240265 1764.62 593 597 135.8
C 15 214 229881 1688.16 593 597 135.8
D 1 52 1294275 8233.7 582 570 157.1
D 12 227 998691 6352.48 582 570 157.1
D 8 195 393687 2501.97 582 570 157.1

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