ASTROSAT CZTI

Data Quality Report

Orbit 37319

Creation date: 2024-06-27T21:38:24.041445
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/AS1A11_030T02_9000005310_37319cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37319cztM0_level2_quad_clean.evt
Size (bytes)420,563,52062,631,360
Size401.1 MB 59.7 MB
Events in quadrant A3,033,658388,297
Events in quadrant B2,778,154398,338
Events in quadrant C3,675,507376,608
Events in quadrant D2,894,744367,220

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120812
B0113951
C0140861
D0119781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5223791.512541%
B5223240.459506%
C52231783.408003%
D5223661.263642%

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 7375 5224 51 51 0.69% 0.98%
B 7375 5224 12 12 0.16% 0.23%
C 7375 5224 171 171 2.32% 3.27%
D 7375 5224 54 54 0.73% 1.03%

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 15 237 231228 1819.9 632 621 126.7
A 10 83 226093 1779.38 632 621 126.7
A 13 248 43809 340.83 632 621 126.7
B 5 172 111268 924.22 626 610 119.7
B 12 18 108531 901.36 626 610 119.7
B 0 190 70656 585.03 626 610 119.7
C 1 23 1036008 7412.45 605 612 139.7
C 15 214 218011 1556.37 605 612 139.7
C 0 10 40427 285.04 605 612 139.7
D 10 253 110702 729.36 616 599 151.0
D 4 239 108726 716.27 616 599 151.0
D 2 249 104905 690.96 616 599 151.0

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