ASTROSAT CZTI

Data Quality Report

Orbit 15758

Creation date: 2024-06-27T17:13:06.460406
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/AS1T02_088T01_9000002332_15758cztM0_level2.evt modeM0/AS1T02_088T01_9000002332_15758cztM0_level2_quad_clean.evt
Size (bytes)437,423,04089,951,040
Size417.2 MB 85.8 MB
Events in quadrant A3,139,625575,334
Events in quadrant B3,340,031594,883
Events in quadrant C3,210,854560,552
Events in quadrant D3,119,940544,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136733
B0141662
C0136572
D0137742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427630.980240%
B6427681.058036%
C6427921.431461%
D6427520.809087%

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 7513 6429 2 2 0.03% 0.03%
B 7513 6429 6 6 0.08% 0.09%
C 7513 6429 0 0 0.00% 0.00%
D 7513 6429 3 3 0.04% 0.05%

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 15 223 7480 40.31 812 797 165.8
A 0 226 7141 38.26 812 797 165.8
A 12 194 6045 31.65 812 797 165.8
B 3 209 60988 390.08 800 784 154.3
B 4 251 32511 205.57 800 784 154.3
B 5 236 21183 132.17 800 784 154.3
C 14 238 116697 640.31 765 771 181.0
C 3 233 74043 404.71 765 771 181.0
C 7 247 22141 118.04 765 771 181.0
D 1 52 81987 382.01 779 763 212.6
D 2 234 25392 115.83 779 763 212.6
D 5 51 22179 100.72 779 763 212.6

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