ASTROSAT CZTI

Data Quality Report

Orbit 17254

Creation date: 2024-06-27T17:34:08.312418
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_185T04_9000002552_17254cztM0_level2.evt modeM0/AS1A05_185T04_9000002552_17254cztM0_level2_quad_clean.evt
Size (bytes)467,642,88092,813,760
Size446.0 MB 88.5 MB
Events in quadrant A3,174,468614,951
Events in quadrant B3,330,921617,433
Events in quadrant C3,198,403584,773
Events in quadrant D4,030,848553,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132962
B0139092
C0133242
D0162442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6299430.682648%
B6299530.841403%
C6299861.365296%
D62993585.683442%

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 7599 6300 0 0 0.00% 0.00%
B 7599 6300 0 0 0.00% 0.00%
C 7599 6300 1 1 0.01% 0.02%
D 7599 6300 268 268 3.53% 4.25%

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 0 23 96648 597.62 799 784 160.4
A 0 226 13065 76.56 799 784 160.4
A 12 194 5950 32.2 799 784 160.4
B 0 189 150697 991.94 798 778 151.1
B 0 197 33921 219.29 798 778 151.1
B 12 111 16765 105.78 798 778 151.1
C 14 238 121475 676.59 767 771 178.4
C 3 233 63150 349.65 767 771 178.4
C 1 16 25213 137.0 767 771 178.4
D 1 52 837442 4589.53 757 739 182.3
D 13 189 165262 902.45 757 739 182.3
D 10 70 115304 628.42 757 739 182.3

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