ASTROSAT CZTI

Data Quality Report

Orbit 40502

Creation date: 2024-06-27T22:16:52.649450
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/AS1A12_022T01_9000005540_40502cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40502cztM0_level2_quad_clean.evt
Size (bytes)324,717,12086,492,160
Size309.7 MB 82.5 MB
Events in quadrant A2,743,972599,747
Events in quadrant B2,775,582614,128
Events in quadrant C2,488,166580,975
Events in quadrant D3,606,303459,753

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112343
B0118652
C0106592
D0143062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5199110.211579%
B5199541.038661%
C519970.134641%
D519992417.772649%

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 7081 5200 3 3 0.04% 0.06%
B 7081 5200 28 28 0.40% 0.54%
C 7081 5200 6 6 0.08% 0.12%
D 7081 5199 292 292 4.12% 5.62%

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 10 83 476301 4020.57 579 567 118.3
A 13 248 19015 155.91 579 567 118.3
A 3 137 6369 49.03 579 567 118.3
B 4 171 467930 4267.41 570 556 109.5
B 3 112 36647 329.53 570 556 109.5
B 5 255 17159 151.6 570 556 109.5
C 15 214 228044 1764.85 556 559 128.9
C 14 254 51112 392.19 556 559 128.9
C 9 146 11904 88.01 556 559 128.9
D 12 128 464404 3634.44 514 498 127.6
D 2 250 396730 3104.25 514 498 127.6
D 12 0 298517 2334.81 514 498 127.6

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