ASTROSAT CZTI

Data Quality Report

Orbit 27215

Creation date: 2024-06-27T19:37:48.778230
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_243T01_9000003918_27215cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27215cztM0_level2_quad_clean.evt
Size (bytes)597,764,16092,980,800
Size570.1 MB 88.7 MB
Events in quadrant A3,402,436615,836
Events in quadrant B3,559,005627,837
Events in quadrant C3,265,994594,899
Events in quadrant D7,429,155517,040

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143370
B0147210
C0138560
D0265210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6585981.488231%
B65851602.429765%
C65851031.564161%
D6585122918.663629%

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 7535 6586 15 15 0.20% 0.23%
B 7535 6586 52 52 0.69% 0.79%
C 7535 6586 1 1 0.01% 0.02%
D 7535 6586 1016 1016 13.48% 15.43%

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 13 248 89024 524.12 843 828 168.3
A 14 235 41322 240.64 843 828 168.3
A 8 192 14534 81.45 843 828 168.3
B 3 64 168941 1057.25 839 817 159.0
B 0 190 32967 202.18 839 817 159.0
B 0 230 25557 155.58 839 817 159.0
C 14 238 128514 676.22 800 803 188.9
C 2 16 13299 66.17 800 803 188.9
C 15 208 7996 38.09 800 803 188.9
D 1 52 3792882 19994.45 742 725 189.7
D 2 250 215985 1134.98 742 725 189.7
D 12 233 158702 832.95 742 725 189.7

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