ASTROSAT CZTI

Data Quality Report

Orbit 07275

Creation date: 2024-06-27T15:17:52.034041
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_154T03_9000000996_07275cztM0_level2.evt modeM0/AS1G06_154T03_9000000996_07275cztM0_level2_quad_clean.evt
Size (bytes)659,214,720137,646,720
Size628.7 MB 131.3 MB
Events in quadrant A4,990,128866,918
Events in quadrant B4,907,190876,299
Events in quadrant C4,673,071872,402
Events in quadrant D4,697,404842,065

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217703
B0216642
C0211212
D0215302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10271850.827573%
B102711000.973615%
C10271590.574433%
D10271830.808100%

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 12031 10271 5 5 0.04% 0.05%
B 12031 10271 15 15 0.12% 0.15%
C 12031 10271 2 2 0.02% 0.02%
D 12031 10271 12 12 0.10% 0.12%

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 365253 1488.36 1196 1169 244.6
A 0 23 14039 52.61 1196 1169 244.6
A 0 226 12168 44.96 1196 1169 244.6
B 0 228 73584 312.49 1205 1175 231.7
B 0 214 70437 298.91 1205 1175 231.7
B 4 81 29527 122.36 1205 1175 231.7
C 7 247 91825 332.14 1170 1176 272.9
C 9 68 12512 41.54 1170 1176 272.9
C 13 61 9103 29.04 1170 1176 272.9
D 2 216 64601 218.58 1169 1134 290.4
D 1 52 60328 203.86 1169 1134 290.4
D 2 14 59903 202.4 1169 1134 290.4

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