ASTROSAT CZTI

Data Quality Report

Orbit 14779

Creation date: 2024-06-27T16:59:34.966839
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/AS1A04_022T06_9000002182_14779cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14779cztM0_level2_quad_clean.evt
Size (bytes)477,475,20063,054,720
Size455.4 MB 60.1 MB
Events in quadrant A3,234,654377,495
Events in quadrant B4,105,872371,176
Events in quadrant C3,384,697370,209
Events in quadrant D3,321,118364,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131183
B0164162
C0135082
D0135692

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61021151.884628%
B61021662.720420%
C6102871.425762%
D61021211.982956%

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 7393 6105 2 2 0.03% 0.03%
B 7393 6105 24 24 0.32% 0.39%
C 7393 6105 0 0 0.00% 0.00%
D 7393 6105 27 27 0.37% 0.44%

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 12 189 73805 443.68 815 799 164.5
A 9 143 12446 70.78 815 799 164.5
A 3 1 8735 48.23 815 799 164.5
B 0 219 502938 3383.95 802 784 148.4
B 3 64 294091 1976.56 802 784 148.4
B 0 229 55829 370.94 802 784 148.4
C 3 233 324709 1831.7 782 788 176.8
C 0 207 11720 61.82 782 788 176.8
C 13 61 5718 27.88 782 788 176.8
D 12 233 119286 577.85 784 768 205.1
D 5 222 101879 492.98 784 768 205.1
D 2 120 37811 180.61 784 768 205.1

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