ASTROSAT CZTI

Data Quality Report

Orbit 26292

Creation date: 2024-06-27T19:27:05.627992
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/AS1A09_044T01_9000003792_26292cztM0_level2.evt modeM0/AS1A09_044T01_9000003792_26292cztM0_level2_quad_clean.evt
Size (bytes)564,292,80097,626,240
Size538.2 MB 93.1 MB
Events in quadrant A4,164,698605,900
Events in quadrant B3,738,498626,366
Events in quadrant C4,118,609602,108
Events in quadrant D4,546,053587,575

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172270
B0158880
C0169780
D0184500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76833053.969803%
B76832343.045685%
C76833254.230118%
D76844035.244664%

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 8318 7685 67 67 0.81% 0.87%
B 8318 7685 0 0 0.00% 0.00%
C 8318 7685 28 28 0.34% 0.36%
D 8319 7686 165 165 1.98% 2.15%

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 13 511287 2688.12 947 925 189.9
A 13 254 12725 62.15 947 925 189.9
A 3 137 8993 42.49 947 925 189.9
B 0 230 29095 153.77 947 922 183.2
B 12 111 22468 117.6 947 922 183.2
B 11 111 20298 105.75 947 922 183.2
C 4 254 319054 1480.52 914 917 214.9
C 14 238 142869 660.61 914 917 214.9
C 3 233 70323 323.0 914 917 214.9
D 1 52 660368 3003.27 916 891 219.6
D 12 233 280179 1271.88 916 891 219.6
D 11 176 47007 210.01 916 891 219.6

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