ASTROSAT CZTI

Data Quality Report

Orbit 36725

Creation date: 2024-06-27T21:30:49.198751
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/AS1A11_101T01_9000005238_36725cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36725cztM0_level2_quad_clean.evt
Size (bytes)451,258,56069,099,840
Size430.4 MB 65.9 MB
Events in quadrant A2,665,974439,612
Events in quadrant B3,913,156450,221
Events in quadrant C3,612,467420,381
Events in quadrant D3,118,396414,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110813
B0150342
C0139792
D0126192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525660.114155%
B52562675.079909%
C52562144.071537%
D52561262.397260%

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 7409 5257 6 6 0.08% 0.11%
B 7409 5257 206 206 2.78% 3.92%
C 7409 5257 180 180 2.43% 3.42%
D 7409 5257 116 116 1.57% 2.21%

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 217594 1754.6 621 610 123.7
A 2 247 27388 216.54 621 610 123.7
A 9 143 13432 103.68 621 610 123.7
B 4 171 1210635 10456.14 611 597 115.7
B 5 255 70898 607.48 611 597 115.7
B 5 172 59706 510.77 611 597 115.7
C 14 254 625829 4659.84 585 590 134.2
C 0 10 419071 3118.89 585 590 134.2
C 15 214 235318 1749.4 585 590 134.2
D 13 249 344610 2384.49 591 576 144.3
D 2 250 142335 982.53 591 576 144.3
D 7 223 127218 877.75 591 576 144.3

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