ASTROSAT CZTI

Data Quality Report

Orbit 20262

Creation date: 2024-06-27T18:13:09.789121
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/AS1A05_117T01_9000003002_20262cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20262cztM0_level2_quad_clean.evt
Size (bytes)226,103,04061,398,720
Size215.6 MB 58.6 MB
Events in quadrant A1,493,449417,600
Events in quadrant B2,062,868414,283
Events in quadrant C1,519,177410,479
Events in quadrant D1,563,452400,384

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064481
B081931
C064661
D066361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3042331.084813%
B30421725.654175%
C3042311.019066%
D3042140.460224%

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 4142 3043 8 8 0.19% 0.26%
B 4142 3043 108 108 2.61% 3.55%
C 4142 3043 0 0 0.00% 0.00%
D 4142 3043 0 0 0.00% 0.00%

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 14 238 42492 548.04 375 367 76.9
A 4 2 4049 47.9 375 367 76.9
A 0 226 3286 37.98 375 367 76.9
B 0 85 578834 8259.33 370 360 70.0
B 7 220 24111 339.1 370 360 70.0
B 12 111 8224 112.27 370 360 70.0
C 14 238 57396 645.06 372 376 88.4
C 3 233 6910 73.92 372 376 88.4
C 13 61 2591 25.06 372 376 88.4
D 2 16 86853 947.97 372 362 91.2
D 1 52 37393 405.87 372 362 91.2
D 7 38 23720 256.01 372 362 91.2

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