ASTROSAT CZTI

Data Quality Report

Orbit 03895

Creation date: 2024-06-27T14:34:55.874973
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/AS1G05_239T02_9000000496_03895cztM0_level2.evt modeM0/AS1G05_239T02_9000000496_03895cztM0_level2_quad_clean.evt
Size (bytes)549,584,64068,866,560
Size524.1 MB 65.7 MB
Events in quadrant A3,655,259412,895
Events in quadrant B3,724,143420,487
Events in quadrant C4,925,100402,629
Events in quadrant D3,895,062391,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149883
B0150232
C0190512
D0161662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65572203.355193%
B65571662.531646%
C65572994.560012%
D65572383.629709%

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 7672 6557 91 91 1.19% 1.39%
B 7672 6557 14 14 0.18% 0.21%
C 7672 6557 133 133 1.73% 2.03%
D 7671 6556 190 190 2.48% 2.90%

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 0 128 219458 1332.69 806 789 164.1
A 0 118 174107 1056.3 806 789 164.1
A 0 149 58032 348.87 806 789 164.1
B 4 170 188266 1177.56 819 802 159.2
B 7 221 186098 1163.95 819 802 159.2
B 15 204 108850 678.71 819 802 159.2
C 2 53 1868815 10386.95 768 773 179.8
C 12 4 44759 244.58 768 773 179.8
C 7 222 9082 46.2 768 773 179.8
D 1 20 696158 3695.23 773 751 188.2
D 13 239 105001 553.96 773 751 188.2
D 2 14 41563 216.87 773 751 188.2

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
Veto Counter