ASTROSAT CZTI

Data Quality Report

Orbit 06812

Creation date: 2024-06-27T15:11:56.459236
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/AS1G06_086T02_9000000936_06812cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06812cztM0_level2_quad_clean.evt
Size (bytes)1,245,268,800214,439,040
Size1.2 GB 204.5 MB
Events in quadrant A8,707,7791,315,839
Events in quadrant B9,593,5431,343,140
Events in quadrant C8,520,1401,319,000
Events in quadrant D9,658,1491,259,698

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380625
B0409314
C0376204
D0406077

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182251941.064472%
B182255272.891632%
C182251310.718793%
D182242361.294996%

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 31271 18230 20 20 0.06% 0.11%
B 31271 18230 117 117 0.37% 0.64%
C 31271 18230 3 3 0.01% 0.02%
D 31271 18229 92 92 0.29% 0.50%

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 469287 1078.34 2123 2073 433.3
A 13 14 45535 100.31 2123 2073 433.3
A 0 226 20065 41.52 2123 2073 433.3
B 4 81 1167377 2877.62 2123 2073 405.0
B 3 220 73959 177.52 2123 2073 405.0
B 0 228 65178 155.83 2123 2073 405.0
C 12 16 200571 412.23 2080 2092 481.5
C 9 247 156059 319.78 2080 2092 481.5
C 1 3 24442 46.42 2080 2092 481.5
D 8 195 816674 1598.51 2075 2008 509.6
D 14 34 518481 1013.4 2075 2008 509.6
D 2 216 254410 495.25 2075 2008 509.6

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