ASTROSAT CZTI

Data Quality Report

Orbit 08456

Creation date: 2024-06-27T15:32:57.816617
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/AS1A03_074T01_9000001192_08456cztM0_level2.evt modeM0/AS1A03_074T01_9000001192_08456cztM0_level2_quad_clean.evt
Size (bytes)411,163,20068,797,440
Size392.1 MB 65.6 MB
Events in quadrant A2,916,840409,655
Events in quadrant B3,162,629412,893
Events in quadrant C2,839,460425,164
Events in quadrant D3,113,415405,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015026
B015014
C015018
D015018

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072
B072
C071
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154082619
B0161722848
C0152762524
D0164062991

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61481292.098243%
B60971492.443825%
C6175851.376518%
D60921342.199606%

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 7692 6768 4 4 0.05% 0.06%
B 7676 6714 11 11 0.14% 0.16%
C 7664 6778 0 0 0.00% 0.00%
D 7694 6711 33 33 0.43% 0.49%

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 13 251 36308 232.73 742 726 152.9
A 15 223 12437 76.6 742 726 152.9
A 0 226 7032 41.25 742 726 152.9
B 5 255 88820 613.06 734 714 143.7
B 11 51 75131 517.81 734 714 143.7
B 4 81 56178 385.93 734 714 143.7
C 13 61 5488 28.05 727 731 169.6
C 8 222 3053 13.69 727 731 169.6
C 3 202 1867 6.7 727 731 169.6
D 1 52 215685 1256.58 711 694 171.1
D 11 129 67581 390.94 711 694 171.1
D 2 152 64856 375.01 711 694 171.1

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