ASTROSAT CZTI

Data Quality Report

Orbit 12964

Creation date: 2024-06-27T16:34:27.262800
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/AS1G08_033T01_9000001906_12964cztM0_level2.evt modeM0/AS1G08_033T01_9000001906_12964cztM0_level2_quad_clean.evt
Size (bytes)544,377,60098,311,680
Size519.2 MB 93.8 MB
Events in quadrant A4,079,118637,626
Events in quadrant B4,683,231617,733
Events in quadrant C3,072,613648,920
Events in quadrant D4,196,929605,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165463
B0184132
C0136082
D0169622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67071532.281199%
B670770810.556135%
C6707200.298196%
D67071742.594304%

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 8653 6710 77 77 0.89% 1.15%
B 8653 6709 411 411 4.75% 6.13%
C 8653 6710 0 0 0.00% 0.00%
D 8653 6710 173 173 2.00% 2.58%

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 15 223 389865 2395.14 791 772 162.5
A 12 189 209775 1286.56 791 772 162.5
A 15 239 157471 964.59 791 772 162.5
B 4 239 1122019 7849.53 751 732 142.8
B 3 64 500081 3495.68 751 732 142.8
B 0 85 78638 545.38 751 732 142.8
C 13 61 5641 26.55 787 790 182.7
C 0 207 2684 10.36 787 790 182.7
C 14 234 2346 8.52 787 790 182.7
D 1 52 581607 3101.5 775 753 187.3
D 8 195 347027 1848.95 775 753 187.3
D 13 122 195692 1040.89 775 753 187.3

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