ASTROSAT CZTI

Data Quality Report

Orbit 21478

Creation date: 2024-06-27T18:28:22.982910
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/AS1T03_141T01_9000003174_21478cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21478cztM0_level2_quad_clean.evt
Size (bytes)437,270,40064,802,880
Size417.0 MB 61.8 MB
Events in quadrant A3,113,397385,295
Events in quadrant B3,272,942395,741
Events in quadrant C3,161,573381,791
Events in quadrant D3,278,035370,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129350
B0134110
C0131720
D0136180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6136180.293351%
B6137470.765847%
C6137771.254685%
D6137470.765847%

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 7396 6136 0 0 0.00% 0.00%
B 7397 6137 4 4 0.05% 0.07%
C 7397 6137 0 0 0.00% 0.00%
D 7397 6137 12 12 0.16% 0.20%

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 9507 54.51 808 794 159.8
A 0 226 7020 38.95 808 794 159.8
A 3 137 6057 32.93 808 794 159.8
B 0 190 39895 256.65 814 797 152.3
B 10 247 27618 176.06 814 797 152.3
B 12 111 17358 108.71 814 797 152.3
C 14 238 125904 702.58 778 786 178.1
C 13 61 5469 26.3 778 786 178.1
C 14 111 1923 6.38 778 786 178.1
D 13 153 85820 456.59 782 761 186.3
D 14 34 68986 366.23 782 761 186.3
D 1 52 48748 257.59 782 761 186.3

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