ASTROSAT CZTI

Data Quality Report

Orbit 05775

Creation date: 2024-06-27T14:58:59.577282
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/AS1G06_002T01_9000000742_05775cztM0_level2.evt modeM0/AS1G06_002T01_9000000742_05775cztM0_level2_quad_clean.evt
Size (bytes)437,904,00058,250,880
Size417.6 MB 55.6 MB
Events in quadrant A3,061,892333,104
Events in quadrant B3,337,626337,869
Events in quadrant C3,073,751338,888
Events in quadrant D3,369,646323,128

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128335
B0135452
C0129232
D0137482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163751.216940%
B6164961.557430%
C6164741.200519%
D61641111.800779%

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 7489 6165 0 0 0.00% 0.00%
B 7489 6165 0 0 0.00% 0.00%
C 7489 6165 0 0 0.00% 0.00%
D 7489 6165 36 36 0.48% 0.58%

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 12 194 7677 42.99 796 780 160.5
A 0 226 7488 41.81 796 780 160.5
A 13 254 2748 12.27 796 780 160.5
B 15 204 134841 888.8 806 790 150.8
B 0 219 67155 440.02 806 790 150.8
B 4 81 18193 115.39 806 790 150.8
C 13 61 6346 30.98 786 792 179.3
C 1 16 5768 27.75 786 792 179.3
C 8 222 1987 6.66 786 792 179.3
D 4 95 279588 1476.92 780 758 188.8
D 12 221 54705 285.75 780 758 188.8
D 2 136 28537 147.14 780 758 188.8

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