ASTROSAT CZTI

Data Quality Report

Orbit 01042

Creation date: 2024-06-27T14:06:35.892312
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/AS1P01_998T02_9000000190_01042cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01042cztM0_level2_quad_clean.evt
Size (bytes)990,167,040109,365,120
Size944.3 MB 104.3 MB
Events in quadrant A7,282,101738,016
Events in quadrant B7,659,330741,538
Events in quadrant C7,427,941707,136
Events in quadrant D7,214,340700,732

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259501
B0270961
C0263631
D0257693

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6083560.920598%
B6083771.265823%
C6084791.298488%
D60831632.679599%

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 7268 6084 226 226 3.11% 3.71%
B 7268 6084 311 311 4.28% 5.11%
C 7269 6085 274 274 3.77% 4.50%
D 7268 6084 480 480 6.60% 7.89%

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 15 127 19443 38.73 1892 1902 452.9
A 11 79 7141 11.57 1892 1902 452.9
A 3 111 5730 8.45 1892 1902 452.9
B 5 249 163627 353.32 1943 1946 457.6
B 0 220 28108 57.17 1943 1946 457.6
B 15 154 22612 45.16 1943 1946 457.6
C 15 241 287903 586.16 1767 1832 488.0
C 8 208 97697 196.43 1767 1832 488.0
C 12 4 87412 175.35 1767 1832 488.0
D 10 119 575531 1062.62 1744 1803 539.9
D 12 22 53858 96.41 1744 1803 539.9
D 10 125 42847 76.02 1744 1803 539.9

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