ASTROSAT CZTI

Data Quality Report

Orbit 09177

Creation date: 2024-06-27T15:42:19.759470
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/AS1C02_041T02_9000001282_09177cztM0_level2.evt modeM0/AS1C02_041T02_9000001282_09177cztM0_level2_quad_clean.evt
Size (bytes)472,835,52073,725,120
Size450.9 MB 70.3 MB
Events in quadrant A3,374,563451,837
Events in quadrant B3,239,484462,026
Events in quadrant C3,115,271452,370
Events in quadrant D4,160,956424,457

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137683
B0134902
C0131112
D0165652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6322360.569440%
B6322570.901613%
C6322210.332173%
D63222734.318254%

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 7662 6322 10 10 0.13% 0.16%
B 7662 6322 0 0 0.00% 0.00%
C 7662 6322 0 0 0.00% 0.00%
D 7662 6322 270 270 3.52% 4.27%

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 5 136547 851.7 790 775 159.4
A 1 162 49425 305.18 790 775 159.4
A 15 174 38978 239.65 790 775 159.4
B 0 214 28337 182.8 802 784 150.7
B 0 219 22740 145.67 802 784 150.7
B 8 234 21183 135.34 802 784 150.7
C 9 68 83755 466.77 776 782 177.8
C 13 61 6047 29.62 776 782 177.8
C 14 67 2504 9.69 776 782 177.8
D 1 52 1159689 5812.98 754 737 199.4
D 7 71 54094 267.62 754 737 199.4
D 2 14 44514 219.57 754 737 199.4

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