ASTROSAT CZTI

Data Quality Report

Orbit 26137

Creation date: 2024-06-27T19:25:14.941269
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/AS1A09_138T04_9000003776_26137cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26137cztM0_level2_quad_clean.evt
Size (bytes)473,541,120101,151,360
Size451.6 MB 96.5 MB
Events in quadrant A3,349,669654,194
Events in quadrant B3,350,412675,436
Events in quadrant C3,435,905642,505
Events in quadrant D3,757,003631,007

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141900
B0141210
C0142600
D0155660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6600370.560606%
B6600570.863636%
C66001051.590909%
D66001582.393939%

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 7670 6600 0 0 0.00% 0.00%
B 7670 6600 0 0 0.00% 0.00%
C 7670 6600 6 6 0.08% 0.09%
D 7670 6600 88 88 1.15% 1.33%

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 13 119385 702.37 838 820 168.8
A 13 254 10538 57.57 838 820 168.8
A 3 137 7752 41.06 838 820 168.8
B 0 190 27538 166.87 839 816 160.1
B 12 111 19149 114.48 839 816 160.1
B 5 172 17577 104.67 839 816 160.1
C 14 238 130306 675.26 819 826 191.7
C 2 16 74368 383.54 819 826 191.7
C 3 233 33769 171.8 819 826 191.7
D 1 52 319161 1625.3 821 805 195.9
D 12 233 304533 1550.62 821 805 195.9
D 2 234 26709 132.25 821 805 195.9

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