ASTROSAT CZTI

Data Quality Report

Orbit 20240520_A13_092T17_9000006262_level2

Creation date: 2024-05-22T11:29:28.264344
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/AS1A13_092T17_9000006262cztM0_level2.fits modeM0/AS1A13_092T17_9000006262cztM0_level2_quad_clean.evt
Size (bytes)497,096,640432,334,080
Size474.1 MB 412.3 MB
Events in quadrant A2,884,8102,371,597
Events in quadrant B2,810,9882,344,782
Events in quadrant C2,976,7562,378,847
Events in quadrant D2,490,5002,108,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011520
B011520
C011520
D011520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02092560
B01636210
C01212090
D01499620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5667626664.703931%
B5667131835.616629%
C566724680.825805%
D5667328054.949447%

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 65439 56684 0 0 0.00% 0.00%
B 65439 56678 0 0 0.00% 0.00%
C 65439 56685 0 0 0.00% 0.00%
D 65439 56597 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 7 110 2339 8.49 752 700 193.1
A 0 29 2264 8.1 752 700 193.1
A 14 95 2210 7.82 752 700 193.1
B 2 9 2639 13.15 742 705 147.1
B 2 8 2086 9.39 742 705 147.1
B 3 17 2035 9.04 742 705 147.1
C 1 81 2243 7.38 786 726 205.6
C 3 202 2230 7.31 786 726 205.6
C 1 80 2192 7.13 786 726 205.6
D 10 189 1868 6.08 714 647 200.8
D 4 16 1864 6.06 714 647 200.8
D 12 6 1826 5.87 714 647 200.8

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