ASTROSAT CZTI

Data Quality Report

Orbit 14045

Creation date: 2024-06-27T16:49:37.692495
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_162T01_9000002074_14045cztM0_level2.evt modeM0/AS1A04_162T01_9000002074_14045cztM0_level2_quad_clean.evt
Size (bytes)575,161,920146,813,760
Size548.5 MB 140.0 MB
Events in quadrant A3,812,640998,443
Events in quadrant B5,099,444977,945
Events in quadrant C3,766,062968,170
Events in quadrant D4,194,130942,287

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168983
B0205972
C0167322
D0177612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80551341.663563%
B80555606.952204%
C80551161.440099%
D80551261.564246%

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 8516 8059 2 2 0.02% 0.02%
B 8516 8059 261 261 3.06% 3.24%
C 8516 8059 3 3 0.04% 0.04%
D 8516 8059 23 23 0.27% 0.29%

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 12 189 94247 485.15 942 920 192.4
A 8 15 36473 184.82 942 920 192.4
A 15 69 18831 93.11 942 920 192.4
B 10 245 490199 2813.05 921 898 173.9
B 15 201 357363 2049.36 921 898 173.9
B 0 219 343891 1971.91 921 898 173.9
C 3 233 186801 880.2 910 911 211.2
C 0 207 26120 119.37 910 911 211.2
C 13 61 6546 26.68 910 911 211.2
D 8 195 257134 1080.11 896 875 237.3
D 1 52 225817 948.11 896 875 237.3
D 12 110 62289 258.85 896 875 237.3

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