ASTROSAT CZTI

Data Quality Report

Orbit 21951

Creation date: 2024-06-27T18:34:24.603526
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/AS1A07_007T02_9000003244_21951cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21951cztM0_level2_quad_clean.evt
Size (bytes)855,714,240158,964,480
Size816.1 MB 151.6 MB
Events in quadrant A5,905,040991,455
Events in quadrant B6,243,5911,005,590
Events in quadrant C6,020,309982,533
Events in quadrant D6,873,101943,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261333
B0268593
C0262743
D0294503

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12890780.605120%
B128901541.194725%
C128891240.962061%
D128903422.653220%

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 14100 12890 0 0 0.00% 0.00%
B 14100 12890 35 35 0.25% 0.27%
C 14099 12889 0 0 0.00% 0.00%
D 14410 12892 297 297 2.06% 2.30%

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 13 254 20573 62.37 1528 1493 305.9
A 3 137 13404 38.94 1528 1493 305.9
A 0 226 12798 36.96 1528 1493 305.9
B 3 64 168492 577.69 1526 1484 289.1
B 12 111 36486 121.07 1526 1484 289.1
B 11 111 32588 107.59 1526 1484 289.1
C 14 238 232424 666.66 1483 1492 346.4
C 13 61 10365 25.61 1483 1492 346.4
C 9 54 8745 20.94 1483 1492 346.4
D 13 174 798323 2208.69 1481 1433 360.8
D 1 52 274157 755.89 1481 1433 360.8
D 2 136 92053 251.17 1481 1433 360.8

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