ASTROSAT CZTI

Data Quality Report

Orbit 35016

Creation date: 2022-06-11T12:20:11.218076
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/AS1T05_010T01_9000005016_35016cztM0_level2.evt modeM0/AS1T05_010T01_9000005016_35016cztM0_level2_quad_clean.evt
Size (bytes)432,829,44078,082,560
Size412.8 MB 74.5 MB
Events in quadrant A2,593,415520,598
Events in quadrant B3,195,002523,401
Events in quadrant C2,885,555503,979
Events in quadrant D4,101,710472,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106363
B0125872
C0112622
D0155392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0371
B0371
C0371
D0381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4903100.203957%
B4903651.325719%
C49031102.243524%
D49031452.957373%

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 6997 4904 3 3 0.04% 0.06%
B 6997 4904 24 24 0.34% 0.49%
C 6997 4904 98 98 1.40% 2.00%
D 6997 4904 108 108 1.54% 2.20%

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 76572 596.97 641 631 127.2
A 15 223 34003 262.34 641 631 127.2
A 13 254 8486 61.75 641 631 127.2
B 5 31 374249 3125.54 638 625 119.5
B 5 172 115306 959.36 638 625 119.5
B 5 15 81348 675.29 638 625 119.5
C 0 10 294062 2100.18 609 616 139.7
C 15 214 205304 1464.95 609 616 139.7
C 12 250 5199 32.8 609 616 139.7
D 8 195 1274861 8705.78 603 588 146.4
D 10 118 147414 1003.11 603 588 146.4
D 12 233 126889 862.88 603 588 146.4

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