ASTROSAT CZTI

Data Quality Report

Orbit 23910

Creation date: 2024-06-27T18:59:59.570383
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_142T01_9000003540_23910cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23910cztM0_level2_quad_clean.evt
Size (bytes)652,728,96082,679,040
Size622.5 MB 78.8 MB
Events in quadrant A3,405,010556,627
Events in quadrant B3,570,467561,084
Events in quadrant C3,421,672525,908
Events in quadrant D8,930,461406,091

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141031
B0146301
C0141241
D0309801

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6497691.062029%
B6498831.277316%
C64981151.769775%
D6498254739.196676%

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 7697 6498 0 0 0.00% 0.00%
B 7698 6499 2 2 0.03% 0.03%
C 7698 6499 6 6 0.08% 0.09%
D 7698 6497 1821 1821 23.66% 28.03%

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 10936 57.11 883 868 176.3
A 0 226 7783 39.22 883 868 176.3
A 3 137 6876 34.08 883 868 176.3
B 15 32 114111 699.15 866 848 162.0
B 0 228 26544 158.62 866 848 162.0
B 12 111 18655 109.92 866 848 162.0
C 14 238 135899 709.11 829 837 190.5
C 0 10 47970 247.46 829 837 190.5
C 13 61 5728 25.68 829 837 190.5
D 12 218 5610924 35978.56 642 624 155.9
D 12 250 419739 2687.76 642 624 155.9
D 8 195 275983 1765.86 642 624 155.9

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