ASTROSAT CZTI

Data Quality Report

Orbit 16570

Creation date: 2024-06-27T17:24:31.779780
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/AS1T03_018T01_9000002442_16570cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16570cztM0_level2_quad_clean.evt
Size (bytes)557,953,92091,661,760
Size532.1 MB 87.4 MB
Events in quadrant A3,563,259586,390
Events in quadrant B3,911,113605,104
Events in quadrant C4,591,895579,666
Events in quadrant D4,384,459544,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150313
B0159682
C0182232
D0175772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66002143.242424%
B66001542.333333%
C66001372.075758%
D66004036.106061%

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 7726 6602 138 138 1.79% 2.09%
B 7726 6602 51 51 0.66% 0.77%
C 7726 6602 2 2 0.03% 0.03%
D 7726 6602 324 324 4.19% 4.91%

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 398247 2437.14 810 794 163.1
A 11 29 29301 174.8 810 794 163.1
A 15 223 13690 79.08 810 794 163.1
B 15 35 196396 1252.62 819 802 156.1
B 7 220 166939 1063.97 819 802 156.1
B 0 85 90788 576.29 819 802 156.1
C 3 233 1405549 7703.24 778 785 182.4
C 14 238 118923 647.83 778 785 182.4
C 7 247 33393 178.81 778 785 182.4
D 10 70 688393 3622.64 774 750 189.8
D 2 33 450821 2371.06 774 750 189.8
D 7 38 267647 1406.07 774 750 189.8

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