ASTROSAT CZTI

Data Quality Report

Orbit 15588

Creation date: 2024-06-27T17:10:47.380039
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/AS1A04_037T02_9000002310_15588cztM0_level2.evt modeM0/AS1A04_037T02_9000002310_15588cztM0_level2_quad_clean.evt
Size (bytes)541,592,640108,057,600
Size516.5 MB 103.1 MB
Events in quadrant A4,889,471701,810
Events in quadrant B3,562,757729,178
Events in quadrant C3,571,170695,944
Events in quadrant D3,925,569679,510

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187083
B0145172
C0145342
D0156472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66833385.057609%
B6683630.942690%
C6683901.346701%
D66831301.945234%

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 8014 6685 288 288 3.59% 4.31%
B 8014 6684 8 8 0.10% 0.12%
C 8014 6684 0 0 0.00% 0.00%
D 8014 6685 87 87 1.09% 1.30%

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 0 253 1448685 8108.29 893 876 178.6
A 0 226 8029 40.06 893 876 178.6
A 12 194 6785 33.09 893 876 178.6
B 4 80 24568 142.6 888 867 166.2
B 5 96 21029 121.31 888 867 166.2
B 4 48 19699 113.31 888 867 166.2
C 14 238 134875 667.11 866 874 200.9
C 3 233 54620 267.57 866 874 200.9
C 10 22 6148 26.25 866 874 200.9
D 12 110 250914 1179.87 878 856 211.9
D 13 172 79530 371.21 878 856 211.9
D 10 70 67134 312.72 878 856 211.9

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