ASTROSAT CZTI

Data Quality Report

Orbit 18134

Creation date: 2024-06-27T17:45:35.630141
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_186T01_9000002692_18134cztM0_level2.evt modeM0/AS1A05_186T01_9000002692_18134cztM0_level2_quad_clean.evt
Size (bytes)483,935,04065,571,840
Size461.5 MB 62.5 MB
Events in quadrant A3,275,389396,980
Events in quadrant B3,380,828405,055
Events in quadrant C3,270,456376,813
Events in quadrant D4,294,797359,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135612
B0138632
C0135782
D0170473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6396200.312695%
B6396390.609756%
C6396570.891182%
D63951402.189210%

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 7631 6397 0 0 0.00% 0.00%
B 7631 6397 0 0 0.00% 0.00%
C 7631 6397 0 0 0.00% 0.00%
D 7630 6396 90 90 1.18% 1.41%

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 0 226 7455 38.97 851 836 169.8
A 4 2 6029 30.58 851 836 169.8
A 12 194 5903 29.84 851 836 169.8
B 4 171 19726 119.0 852 835 158.7
B 12 111 18426 110.81 852 835 158.7
B 0 189 16842 100.83 852 835 158.7
C 14 238 127408 675.46 804 811 187.4
C 0 207 6107 28.26 804 811 187.4
C 13 61 5774 26.48 804 811 187.4
D 7 238 652455 3331.49 805 783 195.6
D 11 176 299395 1526.57 805 783 195.6
D 10 70 193382 984.61 805 783 195.6

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