ASTROSAT CZTI

Data Quality Report

Orbit 00786

Creation date: 2024-06-27T14:02:56.956078
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/AS1P01_010T01_9000000108_00786cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00786cztM0_level2_quad_clean.evt
Size (bytes)638,161,92060,940,800
Size608.6 MB 58.1 MB
Events in quadrant A4,822,726387,928
Events in quadrant B4,981,328394,014
Events in quadrant C4,688,040387,586
Events in quadrant D4,553,237378,766

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173270
B0177960
C0169280
D0165240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A421510.023725%
B421520.047450%
C421510.023725%
D421520.047450%

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 4215 4215 34 34 0.81% 0.81%
B 4215 4215 50 50 1.19% 1.19%
C 4215 4215 37 37 0.88% 0.88%
D 4215 4215 33 33 0.78% 0.78%

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 12 243 19603 60.86 1245 1255 301.5
A 12 236 11610 34.35 1245 1255 301.5
A 15 233 9471 27.25 1245 1255 301.5
B 0 23 43162 137.05 1280 1285 305.6
B 15 22 32174 101.09 1280 1285 305.6
B 0 220 20746 63.69 1280 1285 305.6
C 9 83 30138 88.91 1170 1213 325.3
C 3 111 28307 83.28 1170 1213 325.3
C 3 79 25986 76.15 1170 1213 325.3
D 1 4 84057 232.85 1153 1193 355.9
D 2 170 60260 165.98 1153 1193 355.9
D 13 25 23554 62.84 1153 1193 355.9

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