ASTROSAT CZTI

Data Quality Report

Orbit 07767

Creation date: 2024-06-27T15:23:44.025851
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_132T01_9000001068_07767cztM0_level2.evt modeM0/AS1A02_132T01_9000001068_07767cztM0_level2_quad_clean.evt
Size (bytes)493,848,00087,632,640
Size471.0 MB 83.6 MB
Events in quadrant A3,478,129535,135
Events in quadrant B3,645,266547,766
Events in quadrant C3,381,371545,308
Events in quadrant D3,953,506515,232

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151883
B0155772
C0149222
D0167792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7333640.872767%
B7333751.022774%
C7333390.531842%
D73331221.663712%

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 9028 7334 2 2 0.02% 0.03%
B 9028 7334 7 7 0.08% 0.10%
C 9028 7334 0 0 0.00% 0.00%
D 9028 7333 85 85 0.94% 1.16%

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 8 6 61942 336.37 884 864 181.6
A 0 226 8316 41.04 884 864 181.6
A 12 194 7818 38.3 884 864 181.6
B 4 239 49221 280.87 893 871 172.1
B 0 214 25094 140.71 893 871 172.1
B 0 219 25011 140.23 893 871 172.1
C 1 16 7873 34.6 864 870 202.4
C 13 61 6540 28.01 864 870 202.4
C 8 222 3181 11.42 864 870 202.4
D 2 152 356998 1689.9 857 831 210.8
D 1 52 244444 1155.86 857 831 210.8
D 12 233 42950 199.84 857 831 210.8

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