ASTROSAT CZTI

Data Quality Report

Orbit 20200220_A07_113T01_9000003526_level2

Creation date: 2025-12-09T12:56:03.706023
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/AS1A07_113T01_9000003526cztM0_level2.fits modeM0/AS1A07_113T01_9000003526cztM0_level2_quad_clean.evt
Size (bytes)2,300,981,7602,052,290,880
Size2.1 GB 1.9 GB
Events in quadrant A14,535,38612,464,031
Events in quadrant B13,816,77612,428,743
Events in quadrant C14,331,30412,186,683
Events in quadrant D10,934,8129,035,662

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048340
B048340
C048380
D048340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04895830
B05429770
C04985900
D011027080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23395724531.048483%
B23399180003.418935%
C23396842901.833584%
D2336996254526.763058%

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 314643 234071 0 0 0.00% 0.00%
B 314643 234018 0 0 0.00% 0.00%
C 314643 234068 0 0 0.00% 0.00%
D 314643 233573 0 0 0.00% 0.00%

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 29 13922 11.22 3783 3553 923.9
A 7 110 11701 8.82 3783 3553 923.9
A 9 19 10967 8.02 3783 3553 923.9
B 2 9 11129 10.79 3655 3490 708.2
B 2 8 9199 8.06 3655 3490 708.2
B 5 232 8989 7.76 3655 3490 708.2
C 3 126 9684 6.4 3793 3559 956.4
C 12 241 9668 6.39 3793 3559 956.4
C 9 209 9500 6.21 3793 3559 956.4
D 3 14 7777 6.02 3122 2853 817.9
D 6 231 7726 5.96 3122 2853 817.9
D 15 46 7667 5.89 3122 2853 817.9

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