ASTROSAT CZTI

Data Quality Report

Orbit 07164

Creation date: 2024-06-27T15:16:23.905946
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/AS1A02_175T01_9000000976_07164cztM0_level2.evt modeM0/AS1A02_175T01_9000000976_07164cztM0_level2_quad_clean.evt
Size (bytes)526,530,24076,576,320
Size502.1 MB 73.0 MB
Events in quadrant A3,483,196466,376
Events in quadrant B3,326,830487,263
Events in quadrant C3,781,758470,344
Events in quadrant D4,912,238439,992

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144733
B0138832
C0154322
D0187382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6514711.089960%
B6514270.414492%
C65141041.596561%
D65143956.063862%

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 7844 6515 45 45 0.57% 0.69%
B 7844 6514 7 7 0.09% 0.11%
C 7844 6515 76 76 0.97% 1.17%
D 7844 6515 359 359 4.58% 5.51%

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 384995 2392.77 795 779 160.6
A 3 1 14445 85.11 795 779 160.6
A 8 15 13605 79.88 795 779 160.6
B 4 81 67976 440.47 813 793 152.5
B 0 214 58405 377.72 813 793 152.5
B 0 219 36405 233.48 813 793 152.5
C 4 254 597642 3252.95 783 791 183.5
C 9 68 122861 665.3 783 791 183.5
C 13 61 6019 28.49 783 791 183.5
D 2 216 743288 4007.99 756 735 185.3
D 2 14 648037 3493.86 756 735 185.3
D 14 34 367133 1977.66 756 735 185.3

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