ASTROSAT CZTI

Data Quality Report

Orbit 04775

Creation date: 2024-06-27T14:46:48.837929
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/AS1G05_218T05_9000000602_04775cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04775cztM0_level2_quad_clean.evt
Size (bytes)543,150,72082,307,520
Size518.0 MB 78.5 MB
Events in quadrant A3,221,328529,158
Events in quadrant B3,299,326522,608
Events in quadrant C4,212,991510,170
Events in quadrant D5,285,636487,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139543
B0139792
C0168712
D0200472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344691.087642%
B6344721.134931%
C63441702.679697%
D63443245.107188%

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 7574 6345 4 4 0.05% 0.06%
B 7574 6345 5 5 0.07% 0.08%
C 7574 6345 90 90 1.19% 1.42%
D 7574 6345 251 251 3.31% 3.96%

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 15 203007 1317.37 768 753 153.5
A 0 149 23442 147.78 768 753 153.5
A 13 14 17173 106.95 768 753 153.5
B 4 80 177050 1211.6 773 755 145.5
B 14 167 72482 492.95 773 755 145.5
B 15 54 28618 191.49 773 755 145.5
C 14 48 1172129 6725.11 749 754 174.2
C 1 16 97502 555.45 749 754 174.2
C 9 237 13791 74.85 749 754 174.2
D 11 132 1942117 10938.65 743 722 177.5
D 13 235 153289 859.63 743 722 177.5
D 13 137 105514 590.44 743 722 177.5

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