ASTROSAT CZTI

Data Quality Report

Orbit 36295

Creation date: 2022-06-15T10:56:27.239328
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/AS1A10_071T33_9000005186_36295cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36295cztM0_level2_quad_clean.evt
Size (bytes)491,814,72067,383,360
Size469.0 MB 64.3 MB
Events in quadrant A2,908,089418,940
Events in quadrant B4,409,750399,063
Events in quadrant C3,165,625414,638
Events in quadrant D4,003,278387,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123703
B0170412
C0128682
D0158802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600470.116589%
B60045208.660893%
C6004500.832778%
D60042484.130580%

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 8780 6006 0 0 0.00% 0.00%
B 8780 6006 425 425 4.84% 7.08%
C 8780 6006 38 38 0.43% 0.63%
D 8780 6006 255 255 2.90% 4.25%

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 10 83 187913 1325.0 692 679 141.3
A 9 143 28568 197.36 692 679 141.3
A 13 6 9290 60.94 692 679 141.3
B 5 236 943576 7293.56 665 646 129.3
B 5 172 447106 3453.37 665 646 129.3
B 0 155 108623 835.2 665 646 129.3
C 15 214 254719 1605.3 673 677 158.3
C 0 10 237394 1495.82 673 677 158.3
C 0 207 31240 193.13 673 677 158.3
D 12 6 740647 4522.07 663 644 163.6
D 7 223 388203 2368.33 663 644 163.6
D 12 227 130062 790.86 663 644 163.6

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