ASTROSAT CZTI

Data Quality Report

Orbit 07444

Creation date: 2024-06-27T15:19:51.092123
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/AS1A02_108T01_9000001024_07444cztM0_level2.evt modeM0/AS1A02_108T01_9000001024_07444cztM0_level2_quad_clean.evt
Size (bytes)521,291,520101,528,640
Size497.1 MB 96.8 MB
Events in quadrant A3,448,535641,747
Events in quadrant B3,593,874654,829
Events in quadrant C4,412,838634,054
Events in quadrant D3,812,432611,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156872
B0159631
C0181801
D0167601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7653370.483471%
B7653720.940808%
C7653841.097609%
D7653911.189076%

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 7868 7654 1 1 0.01% 0.01%
B 7868 7654 6 6 0.08% 0.08%
C 7868 7654 0 0 0.00% 0.00%
D 7868 7654 41 41 0.52% 0.54%

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 15 234 23131 122.17 885 864 182.3
A 15 239 17226 89.77 885 864 182.3
A 0 226 8362 41.14 885 864 182.3
B 0 214 48523 278.52 894 874 171.1
B 10 245 40124 229.43 894 874 171.1
B 4 170 19434 108.49 894 874 171.1
C 9 68 1017237 5030.44 867 871 202.0
C 8 128 7003 30.35 867 871 202.0
C 13 61 6505 27.89 867 871 202.0
D 13 105 152406 711.93 860 834 212.9
D 2 14 136139 635.53 860 834 212.9
D 1 52 133627 623.73 860 834 212.9

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