ASTROSAT CZTI

Data Quality Report

Orbit 16361

Creation date: 2024-06-27T17:21:35.059274
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/AS1A05_069T03_9000002416_16361cztM0_level2.evt modeM0/AS1A05_069T03_9000002416_16361cztM0_level2_quad_clean.evt
Size (bytes)599,912,640100,751,040
Size572.1 MB 96.1 MB
Events in quadrant A5,954,779595,854
Events in quadrant B4,048,164665,176
Events in quadrant C3,865,536631,404
Events in quadrant D3,776,564622,147

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229232
B0167961
C0162521
D0165421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7711112614.602516%
B77111982.567760%
C77112032.632603%
D77111572.036052%

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 7827 7715 635 635 8.11% 8.23%
B 7827 7715 20 20 0.26% 0.26%
C 7827 7715 0 0 0.00% 0.00%
D 7827 7715 24 24 0.31% 0.31%

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 15 174 2500784 13897.1 896 875 179.9
A 0 226 7900 39.05 896 875 179.9
A 15 223 7091 34.55 896 875 179.9
B 10 16 137540 752.08 944 917 181.7
B 0 189 68352 371.22 944 917 181.7
B 15 35 52997 286.69 944 917 181.7
C 3 233 186032 864.69 905 910 214.1
C 14 238 140228 650.74 905 910 214.1
C 13 61 6453 25.89 905 910 214.1
D 1 52 102142 423.83 920 897 238.9
D 12 218 88874 368.29 920 897 238.9
D 10 70 73588 304.3 920 897 238.9

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