ASTROSAT CZTI

Data Quality Report

Orbit 09937

Creation date: 2024-06-27T15:52:38.677648
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/AS1A03_107T01_9000001418_09937cztM0_level2.evt modeM0/AS1A03_107T01_9000001418_09937cztM0_level2_quad_clean.evt
Size (bytes)1,027,543,680155,183,040
Size979.9 MB 148.0 MB
Events in quadrant A7,526,193947,465
Events in quadrant B6,463,691983,077
Events in quadrant C5,795,869978,055
Events in quadrant D10,465,201903,328

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030910165
B027548129
C026423134
D040115401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0171
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128604273.320373%
B128633092.402239%
C128582231.734329%
D128248816.869931%

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 14507 12920 139 139 0.96% 1.08%
B 14507 12920 25 25 0.17% 0.19%
C 14507 12921 1 1 0.01% 0.01%
D 14507 12909 657 657 4.53% 5.09%

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 15 239 1613591 5225.28 1508 1475 308.5
A 15 174 90464 288.44 1508 1475 308.5
A 14 111 16791 49.64 1508 1475 308.5
B 4 81 135687 459.01 1522 1480 292.4
B 10 252 127256 430.17 1522 1480 292.4
B 0 214 94946 319.67 1522 1480 292.4
C 14 234 12522 31.91 1479 1480 346.0
C 13 61 11240 28.21 1479 1480 346.0
C 12 4 8439 20.11 1479 1480 346.0
D 1 52 2502772 6981.03 1439 1396 358.3
D 2 16 1043134 2907.36 1439 1396 358.3
D 12 233 523411 1456.88 1439 1396 358.3

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