ASTROSAT CZTI

Data Quality Report

Orbit 16242

Creation date: 2024-06-27T17:19:50.217435
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/AS1T02_112T01_9000002390_16242cztM0_level2.evt modeM0/AS1T02_112T01_9000002390_16242cztM0_level2_quad_clean.evt
Size (bytes)531,360,000108,599,040
Size506.7 MB 103.6 MB
Events in quadrant A3,816,150711,735
Events in quadrant B3,823,951717,964
Events in quadrant C3,480,165708,141
Events in quadrant D4,526,523693,077

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154143
B0154992
C0143962
D0176652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65662423.685653%
B65661692.573865%
C65661452.208346%
D65662634.005483%

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 7582 6568 78 78 1.03% 1.19%
B 7582 6568 31 31 0.41% 0.47%
C 7582 6568 0 0 0.00% 0.00%
D 7582 6568 114 114 1.50% 1.74%

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 15 174 494325 2841.36 855 839 173.7
A 9 143 20999 116.08 855 839 173.7
A 0 226 7766 39.88 855 839 173.7
B 7 220 169191 1063.74 848 831 158.3
B 0 198 94631 592.65 848 831 158.3
B 4 216 41561 257.34 848 831 158.3
C 3 233 176175 936.74 813 820 187.2
C 14 238 125310 665.02 813 820 187.2
C 13 61 5831 26.77 813 820 187.2
D 1 52 1283590 6411.49 829 806 200.1
D 10 70 47617 233.97 829 806 200.1
D 15 0 37686 184.33 829 806 200.1

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