ASTROSAT CZTI

Data Quality Report

Orbit 11161

Creation date: 2024-06-27T16:09:02.266824
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_058T01_9000001628_11161cztM0_level2.evt modeM0/AS1A04_058T01_9000001628_11161cztM0_level2_quad_clean.evt
Size (bytes)40,386,2403,516,480
Size38.5 MB 3.4 MB
Events in quadrant A305,13014,500
Events in quadrant B290,82815,332
Events in quadrant C266,63114,006
Events in quadrant D316,67413,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039622693
B039422708
C036452409
D043172990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03624
B03527
C03525
D03622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01211
B0119
C0119
D01210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58410.171233%
B59620.335570%
C61200.000000%
D56630.530035%

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 1390 852 0 0 0.00% 0.00%
B 1247 849 0 0 0.00% 0.00%
C 1259 903 0 0 0.00% 0.00%
D 1279 841 1 1 0.08% 0.12%

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 15 30461 1968.89 65 63 15.4
A 8 5 14129 911.06 65 63 15.4
A 2 79 5999 384.48 65 63 15.4
B 4 239 12724 822.79 68 66 15.4
B 0 214 6271 403.34 68 66 15.4
B 3 189 2009 126.3 68 66 15.4
C 5 128 1259 67.12 67 67 17.8
C 13 61 517 25.34 67 67 17.8
C 3 202 162 5.35 67 67 17.8
D 10 157 68941 4147.1 60 58 16.6
D 13 249 6262 373.51 60 58 16.6
D 1 52 2396 140.76 60 58 16.6

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