ASTROSAT CZTI

Data Quality Report

Orbit 20292

Creation date: 2024-06-27T18:13:30.572536
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_174T01_9000003008_20292cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20292cztM0_level2_quad_clean.evt
Size (bytes)466,309,440104,774,400
Size444.7 MB 99.9 MB
Events in quadrant A3,441,364681,120
Events in quadrant B3,414,595706,339
Events in quadrant C3,303,421685,461
Events in quadrant D3,540,882666,335

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140122
B0140922
C0136112
D0144682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218530.852364%
B62181001.608234%
C6217981.576323%
D6217751.206370%

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 7493 6219 7 7 0.09% 0.11%
B 7493 6219 10 10 0.13% 0.16%
C 7492 6218 0 0 0.00% 0.00%
D 7492 6218 24 24 0.32% 0.39%

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 8 205 132990 806.22 818 802 164.0
A 4 2 116964 708.48 818 802 164.0
A 12 96 34956 208.31 818 802 164.0
B 7 220 84310 544.41 820 801 153.4
B 4 142 77716 501.42 820 801 153.4
B 3 64 19374 121.08 820 801 153.4
C 14 238 127069 670.25 809 817 188.4
C 0 207 12596 62.53 809 817 188.4
C 13 61 5579 25.28 809 817 188.4
D 1 52 411656 2092.33 816 796 196.4
D 2 234 28743 142.32 816 796 196.4
D 2 120 25161 124.08 816 796 196.4

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