ASTROSAT CZTI

Data Quality Report

Orbit 14459

Creation date: 2024-06-27T16:55:27.255532
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_025T01_9000002130_14459cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14459cztM0_level2_quad_clean.evt
Size (bytes)475,519,680109,442,880
Size453.5 MB 104.4 MB
Events in quadrant A3,255,696735,633
Events in quadrant B3,693,856736,604
Events in quadrant C3,281,067727,107
Events in quadrant D3,757,772690,513

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136973
B0150202
C0135482
D0151172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6080240.394737%
B60801853.042763%
C6080220.361842%
D60802373.898026%

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 7486 6082 0 0 0.00% 0.00%
B 7486 6082 103 103 1.38% 1.69%
C 7486 6082 1 1 0.01% 0.02%
D 7486 6082 183 183 2.44% 3.01%

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 8 15 124673 785.37 785 772 157.8
A 12 189 53650 335.18 785 772 157.8
A 14 14 36465 226.25 785 772 157.8
B 0 219 341585 2349.71 779 762 145.0
B 15 222 111437 763.02 779 762 145.0
B 0 189 55343 376.29 779 762 145.0
C 3 233 266493 1516.31 768 774 175.2
C 14 234 9739 51.16 768 774 175.2
C 12 4 6272 31.37 768 774 175.2
D 10 199 485388 2434.43 741 728 199.1
D 13 122 321727 1612.36 741 728 199.1
D 12 110 88225 439.49 741 728 199.1

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