ASTROSAT CZTI

Data Quality Report

Orbit 15078

Creation date: 2024-06-27T17:03:26.692070
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_065T01_9000002218_15078cztM0_level2.evt modeM0/AS1T02_065T01_9000002218_15078cztM0_level2_quad_clean.evt
Size (bytes)455,673,60090,083,520
Size434.6 MB 85.9 MB
Events in quadrant A3,000,763580,405
Events in quadrant B3,206,562589,714
Events in quadrant C4,018,810566,443
Events in quadrant D3,138,750544,322

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131983
B0136682
C0164842
D0138472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6402300.468604%
B6402460.718525%
C6402320.499844%
D6402490.765386%

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 7553 6404 1 1 0.01% 0.02%
B 7553 6404 4 4 0.05% 0.06%
C 7553 6403 1 1 0.01% 0.02%
D 7553 6404 45 45 0.60% 0.70%

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 13 248 13227 79.91 773 758 156.0
A 0 226 6958 39.73 773 758 156.0
A 12 194 5838 32.56 773 758 156.0
B 3 64 57409 385.01 777 757 147.1
B 10 245 51679 346.07 777 757 147.1
B 3 209 19686 128.64 777 757 147.1
C 3 233 1074792 6182.69 753 757 173.7
C 3 232 6080 30.64 753 757 173.7
C 13 61 5381 26.62 753 757 173.7
D 9 1 145589 794.17 748 727 182.4
D 2 120 51812 280.06 748 727 182.4
D 13 249 35514 190.71 748 727 182.4

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