ASTROSAT CZTI

Data Quality Report

Orbit 12184

Creation date: 2024-06-27T16:23:31.204633
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/AS1A04_160T01_9000001798_12184cztM0_level2.evt modeM0/AS1A04_160T01_9000001798_12184cztM0_level2_quad_clean.evt
Size (bytes)579,476,160123,543,360
Size552.6 MB 117.8 MB
Events in quadrant A3,760,988840,654
Events in quadrant B4,913,131811,932
Events in quadrant C5,117,677826,851
Events in quadrant D3,322,075813,545

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
A01538860
B01885169
C01947755
D01412560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64292343.639757%
B642676611.920324%
C64284997.762912%
D64281041.617922%

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 7574 6431 66 66 0.87% 1.03%
B 7574 6432 389 389 5.14% 6.05%
C 7574 6434 352 352 4.65% 5.47%
D 7575 6434 10 10 0.13% 0.16%

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 9 143 380436 2409.8 782 766 157.6
A 8 15 124525 785.51 782 766 157.6
A 1 162 95883 603.72 782 766 157.6
B 4 239 1769927 12587.23 747 727 140.6
B 11 51 98132 693.0 747 727 140.6
B 15 204 41339 288.94 747 727 140.6
C 15 208 2154840 12438.3 758 760 173.2
C 13 61 5401 26.8 758 760 173.2
C 4 175 2715 11.29 758 760 173.2
D 4 95 104231 573.69 768 747 180.4
D 1 52 78763 432.5 768 747 180.4
D 10 50 57217 313.05 768 747 180.4

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