ASTROSAT CZTI

Data Quality Report

Orbit 27317

Creation date: 2024-06-27T19:38:49.291111
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_255T01_9000003922_27317cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27317cztM0_level2_quad_clean.evt
Size (bytes)501,393,60097,499,520
Size478.2 MB 93.0 MB
Events in quadrant A3,397,860639,822
Events in quadrant B3,888,853640,755
Events in quadrant C3,377,508604,658
Events in quadrant D4,058,780593,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144210
B0158100
C0143140
D0165450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6807430.631703%
B6808831.219154%
C6808771.131022%
D6807921.351550%

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 7587 6808 4 4 0.05% 0.06%
B 7588 6809 9 9 0.12% 0.13%
C 7588 6809 1 1 0.01% 0.01%
D 7587 6808 80 80 1.05% 1.18%

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 39584 221.35 869 852 175.0
A 13 254 12288 65.36 869 852 175.0
A 3 137 7856 40.03 869 852 175.0
B 7 205 318104 1956.46 861 841 162.2
B 10 245 69546 423.68 861 841 162.2
B 5 172 57455 349.12 861 841 162.2
C 14 238 130317 670.08 819 825 193.2
C 2 16 29949 150.71 819 825 193.2
C 15 208 20177 100.14 819 825 193.2
D 1 52 440138 2099.47 824 806 209.3
D 2 250 206751 984.16 824 806 209.3
D 12 233 125652 596.61 824 806 209.3

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