ASTROSAT CZTI

Data Quality Report

Orbit 37073

Creation date: 2024-06-27T21:35:13.388283
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/AS1A09_138T04_9000005282_37073cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37073cztM0_level2_quad_clean.evt
Size (bytes)437,463,36051,834,240
Size417.2 MB 49.4 MB
Events in quadrant A2,829,938314,610
Events in quadrant B3,027,420317,003
Events in quadrant C2,871,125301,896
Events in quadrant D4,180,054284,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113373
B0120622
C0112532
D0158072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5005230.459540%
B5005661.318681%
C5005901.798202%
D50062044.075110%

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 7158 5006 4 4 0.06% 0.08%
B 7158 5006 34 34 0.47% 0.68%
C 7158 5006 60 60 0.84% 1.20%
D 7159 5007 185 185 2.58% 3.69%

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 261826 2014.63 646 636 129.6
A 7 3 33554 253.91 646 636 129.6
A 9 143 26007 195.69 646 636 129.6
B 5 172 248124 2062.65 639 626 120.0
B 0 229 153474 1273.84 639 626 120.0
B 5 255 57978 477.97 639 626 120.0
C 0 10 222352 1573.05 612 619 141.0
C 15 214 211027 1492.7 612 619 141.0
C 0 207 33859 235.82 612 619 141.0
D 6 112 1116637 7547.87 614 600 147.9
D 1 52 271119 1829.55 614 600 147.9
D 1 47 104338 701.59 614 600 147.9

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