ASTROSAT CZTI

Data Quality Report

Orbit 21074

Creation date: 2024-06-27T18:23:10.021571
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/AS1A05_075T05_9000003116_21074cztM0_level2.evt modeM0/AS1A05_075T05_9000003116_21074cztM0_level2_quad_clean.evt
Size (bytes)462,072,96087,906,240
Size440.7 MB 83.8 MB
Events in quadrant A3,084,711567,547
Events in quadrant B3,498,171579,071
Events in quadrant C3,144,309553,449
Events in quadrant D3,846,080529,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130102
B0141792
C0131282
D0155472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6195220.355125%
B61951352.179177%
C6195460.742534%
D6195851.372074%

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 7560 6196 0 0 0.00% 0.00%
B 7560 6196 61 61 0.81% 0.98%
C 7560 6196 0 0 0.00% 0.00%
D 7560 6196 58 58 0.77% 0.94%

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 13 254 10015 58.57 795 783 157.6
A 0 226 6901 38.81 795 783 157.6
A 3 137 6102 33.74 795 783 157.6
B 7 220 152401 1024.38 798 781 148.0
B 0 228 78942 528.08 798 781 148.0
B 0 219 69196 462.23 798 781 148.0
C 14 238 123649 682.89 774 782 179.9
C 13 61 5393 25.63 774 782 179.9
C 10 91 2865 11.58 774 782 179.9
D 1 52 319424 1702.96 770 749 187.1
D 13 153 133594 709.91 770 749 187.1
D 7 223 122549 650.88 770 749 187.1

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