ASTROSAT CZTI

Data Quality Report

Orbit 31066

Creation date: 2024-06-27T20:22:57.651445
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/AS1C06_002T01_9000004490_31066cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31066cztM0_level2_quad_clean.evt
Size (bytes)547,053,120112,040,640
Size521.7 MB 106.9 MB
Events in quadrant A3,070,979750,459
Events in quadrant B5,303,915748,043
Events in quadrant C3,438,144730,395
Events in quadrant D4,307,944704,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135472
B0204392
C0144192
D0171412

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6589220.333890%
B65891261.912278%
C65891932.929124%
D65891542.337229%

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 7534 6590 0 0 0.00% 0.00%
B 7534 6590 8 8 0.11% 0.12%
C 7534 6590 49 49 0.65% 0.74%
D 7534 6590 89 89 1.18% 1.35%

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 13 254 12625 74.93 793 777 158.1
A 3 137 7683 43.68 793 777 158.1
A 0 226 6763 37.86 793 777 158.1
B 6 159 1949101 13236.68 792 772 147.2
B 0 183 57541 385.68 792 772 147.2
B 5 172 55394 371.09 792 772 147.2
C 0 10 269741 1515.12 769 774 177.5
C 14 238 124341 696.07 769 774 177.5
C 4 175 17853 96.21 769 774 177.5
D 8 195 812048 4499.0 766 747 180.3
D 13 249 355787 1968.84 766 747 180.3
D 13 174 120942 666.53 766 747 180.3

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