ASTROSAT CZTI

Data Quality Report

Orbit 18746

Creation date: 2024-06-27T17:54:17.261711
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/AS1A05_156T01_9000002804_18746cztM0_level2.evt modeM0/AS1A05_156T01_9000002804_18746cztM0_level2_quad_clean.evt
Size (bytes)460,373,76089,400,960
Size439.0 MB 85.3 MB
Events in quadrant A3,352,427571,237
Events in quadrant B3,295,688577,413
Events in quadrant C3,473,730557,361
Events in quadrant D3,384,703553,914

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140992
B0137482
C0142962
D0141372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64141051.637044%
B64141231.917680%
C64141622.525725%
D64141051.637044%

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 7549 6415 0 0 0.00% 0.00%
B 7549 6415 1 1 0.01% 0.02%
C 7549 6415 1 1 0.01% 0.02%
D 7549 6415 4 4 0.05% 0.06%

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 15 192 99382 590.02 837 823 167.0
A 15 191 17130 97.62 837 823 167.0
A 13 254 10444 57.6 837 823 167.0
B 12 111 18648 113.33 831 812 157.4
B 11 111 16216 97.88 831 812 157.4
B 14 111 13982 83.68 831 812 157.4
C 3 233 190618 1017.9 806 811 186.5
C 14 238 126324 673.1 806 811 186.5
C 9 54 16471 83.98 806 811 186.5
D 14 34 102531 511.76 821 796 198.8
D 7 38 44192 218.29 821 796 198.8
D 13 168 44020 217.43 821 796 198.8

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