ASTROSAT CZTI

Data Quality Report

Orbit 25042

Creation date: 2024-06-27T19:13:08.160092
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_206T01_9000003672_25042cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25042cztM0_level2_quad_clean.evt
Size (bytes)511,571,52076,919,040
Size487.9 MB 73.4 MB
Events in quadrant A3,458,299491,041
Events in quadrant B3,467,114505,303
Events in quadrant C3,459,386465,101
Events in quadrant D4,692,435439,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138322
B0139432
C0142062
D0182363

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6141520.846768%
B6141510.830484%
C6141641.042176%
D6140921.498371%

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 7536 6142 25 25 0.33% 0.41%
B 7536 6142 8 8 0.11% 0.13%
C 7536 6142 0 0 0.00% 0.00%
D 7535 6141 44 44 0.58% 0.72%

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 4 2 261499 1578.96 829 815 165.1
A 13 254 9686 53.73 829 815 165.1
A 0 226 7120 38.19 829 815 165.1
B 4 80 55030 353.47 836 818 153.4
B 5 172 29719 188.44 836 818 153.4
B 0 190 26982 170.59 836 818 153.4
C 7 247 207748 1138.98 788 796 181.7
C 14 238 128128 700.78 788 796 181.7
C 3 233 47967 259.61 788 796 181.7
D 8 195 1273684 6656.96 785 764 191.2
D 1 52 190692 993.26 785 764 191.2
D 2 244 98949 513.48 785 764 191.2

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