ASTROSAT CZTI

Data Quality Report

Orbit 18177

Creation date: 2024-06-27T17:46:14.131021
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/AS1A05_063T02_9000002708_18177cztM0_level2.evt modeM0/AS1A05_063T02_9000002708_18177cztM0_level2_quad_clean.evt
Size (bytes)422,568,00086,126,400
Size403.0 MB 82.1 MB
Events in quadrant A3,122,856553,565
Events in quadrant B3,070,347559,293
Events in quadrant C3,228,237537,453
Events in quadrant D2,960,369531,027

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129931
B0127121
C0133181
D0127311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6108480.785855%
B6108480.785855%
C6107891.457344%
D6107420.687735%

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 7278 6109 1 1 0.01% 0.02%
B 7278 6109 0 0 0.00% 0.00%
C 7277 6108 17 17 0.23% 0.28%
D 7277 6108 8 8 0.11% 0.13%

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 15 174 165075 1071.18 768 752 153.4
A 0 226 6929 40.27 768 752 153.4
A 12 194 5715 32.35 768 752 153.4
B 0 189 29625 200.69 757 741 143.9
B 0 229 20578 137.83 757 741 143.9
B 4 171 18634 124.32 757 741 143.9
C 4 254 276174 1630.02 726 733 169.0
C 14 238 114064 670.68 726 733 169.0
C 13 61 5126 26.0 726 733 169.0
D 10 70 68347 371.55 746 724 182.0
D 7 238 38030 204.98 746 724 182.0
D 2 234 25753 137.52 746 724 182.0

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