ASTROSAT CZTI

Data Quality Report

Orbit 27917

Creation date: 2024-06-27T19:45:57.521019
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/AS1A10_049T01_9000004032_27917cztM0_level2.evt modeM0/AS1A10_049T01_9000004032_27917cztM0_level2_quad_clean.evt
Size (bytes)140,523,84029,088,000
Size134.0 MB 27.7 MB
Events in quadrant A958,836192,064
Events in quadrant B992,924195,343
Events in quadrant C998,068183,172
Events in quadrant D1,183,051180,121

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038880
B040320
C040780
D048490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1777553.095104%
B1777693.882949%
C1777774.333146%
D1777653.657850%

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 2757 1777 0 0 0.00% 0.00%
B 2757 1777 1 1 0.04% 0.06%
C 2757 1777 0 0 0.00% 0.00%
D 2757 1777 6 6 0.22% 0.34%

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 8 192 4776 88.75 247 241 51.1
A 13 254 2911 52.25 247 241 51.1
A 3 137 2218 38.69 247 241 51.1
B 10 245 28610 594.76 245 239 47.7
B 12 111 5661 113.66 245 239 47.7
B 11 111 5135 102.64 245 239 47.7
C 14 238 38303 662.31 242 243 57.5
C 3 233 15773 270.25 242 243 57.5
C 13 61 1690 25.18 242 243 57.5
D 8 195 131936 2272.55 241 233 58.0
D 1 52 83420 1435.4 241 233 58.0
D 13 104 30841 528.14 241 233 58.0

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