ASTROSAT CZTI

Data Quality Report

Orbit 20638

Creation date: 2024-06-27T18:17:44.548275
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_007T06_9000003050_20638cztM0_level2.evt modeM0/AS1A05_007T06_9000003050_20638cztM0_level2_quad_clean.evt
Size (bytes)462,435,840105,022,080
Size441.0 MB 100.2 MB
Events in quadrant A3,308,277709,527
Events in quadrant B3,326,030699,003
Events in quadrant C3,232,406667,358
Events in quadrant D3,708,205663,045

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138531
B0138501
C0134821
D0151531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6327901.422475%
B6327951.501502%
C63261091.723048%
D63261862.940247%

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 7457 6327 6 6 0.08% 0.09%
B 7457 6327 9 9 0.12% 0.14%
C 7456 6326 0 0 0.00% 0.00%
D 7456 6326 74 74 0.99% 1.17%

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 5 16 164250 1009.63 817 803 161.9
A 0 226 7350 40.44 817 803 161.9
A 12 194 6514 35.28 817 803 161.9
B 0 197 48563 319.96 798 780 149.3
B 0 190 32152 210.07 798 780 149.3
B 4 216 22253 143.79 798 780 149.3
C 14 238 121877 679.66 769 775 178.2
C 8 208 106408 592.85 769 775 178.2
C 13 61 5397 25.94 769 775 178.2
D 1 52 504681 2683.97 782 760 187.8
D 13 153 68503 360.81 782 760 187.8
D 1 20 60143 316.28 782 760 187.8

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