ASTROSAT CZTI

Data Quality Report

Orbit 35557

Creation date: 2022-04-26T15:37:51.509478
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/AS1A11_093T01_9000005090_35557cztM0_level2.evt modeM0/AS1A11_093T01_9000005090_35557cztM0_level2_quad_clean.evt
Size (bytes)529,755,84072,066,240
Size505.2 MB 68.7 MB
Events in quadrant A3,670,686438,422
Events in quadrant B4,607,981439,606
Events in quadrant C3,256,082464,733
Events in quadrant D4,106,867424,789

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152013
B0176042
C0130412
D0159832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5926280.472494%
B592678113.179210%
C5926641.079987%
D59263305.568680%

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 7207 5927 11 11 0.15% 0.19%
B 7207 5927 530 530 7.35% 8.94%
C 7207 5927 52 52 0.72% 0.88%
D 7207 5927 254 254 3.52% 4.29%

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 15 169 872631 6412.74 673 658 136.0
A 10 83 144278 1056.22 673 658 136.0
A 9 143 41596 301.07 673 658 136.0
B 5 172 1827500 14857.55 635 617 123.0
B 15 85 108174 874.73 635 617 123.0
B 5 200 55970 450.17 635 617 123.0
C 0 10 356493 2321.32 664 670 153.3
C 15 214 265041 1724.7 664 670 153.3
C 14 67 41052 263.44 664 670 153.3
D 13 249 681183 4309.6 648 629 157.9
D 10 118 448486 2836.05 648 629 157.9
D 8 195 188958 1192.59 648 629 157.9

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