ASTROSAT CZTI

Data Quality Report

Orbit 41694

Creation date: 2024-06-27T22:31:41.350870
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_035T02_9000005690_41694cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41694cztM0_level2_quad_clean.evt
Size (bytes)338,388,48084,355,200
Size322.7 MB 80.4 MB
Events in quadrant A2,763,982593,098
Events in quadrant B2,520,756597,255
Events in quadrant C2,802,330543,195
Events in quadrant D4,046,404468,079

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112542
B0109172
C0114892
D0154882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5033140.278164%
B5033440.874230%
C50331963.894298%
D503366313.173058%

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 7097 5034 9 9 0.13% 0.18%
B 7097 5034 30 30 0.42% 0.60%
C 7097 5034 198 198 2.79% 3.93%
D 7097 5034 650 650 9.16% 12.91%

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 529119 4601.04 564 554 114.9
A 13 248 18131 153.0 564 554 114.9
A 15 223 17242 145.27 564 554 114.9
B 4 141 143315 1329.86 560 545 107.4
B 0 190 86434 800.03 560 545 107.4
B 5 255 45084 414.87 560 545 107.4
C 0 10 503836 4003.27 535 539 125.7
C 15 214 202555 1606.85 535 539 125.7
C 15 159 4666 32.83 535 539 125.7
D 2 249 1735041 13909.92 511 498 124.7
D 2 120 159916 1278.43 511 498 124.7
D 13 249 136444 1090.2 511 498 124.7

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