ASTROSAT CZTI

Data Quality Report

Orbit 27703

Creation date: 2024-06-27T19:43:19.190898
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_262T01_9000003988_27703cztM0_level2.evt modeM0/AS1T03_262T01_9000003988_27703cztM0_level2_quad_clean.evt
Size (bytes)481,979,520109,808,640
Size459.7 MB 104.7 MB
Events in quadrant A3,270,440738,620
Events in quadrant B3,433,043743,625
Events in quadrant C3,456,353715,396
Events in quadrant D4,006,201685,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138630
B0144530
C0144090
D0162630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6349560.882029%
B6348610.960933%
C63481061.669817%
D63482283.591682%

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 7584 6349 1 1 0.01% 0.02%
B 7583 6348 4 4 0.05% 0.06%
C 7583 6348 0 0 0.00% 0.00%
D 7583 6348 192 192 2.53% 3.02%

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 13490 76.4 843 829 165.7
A 13 254 10529 58.53 843 829 165.7
A 3 137 7488 40.18 843 829 165.7
B 0 230 125002 803.64 832 813 154.5
B 0 190 43435 275.81 832 813 154.5
B 12 111 18052 111.55 832 813 154.5
C 14 238 132133 700.42 814 822 187.5
C 3 233 74765 394.41 814 822 187.5
C 8 208 31070 161.34 814 822 187.5
D 11 176 686197 3600.14 813 793 190.4
D 1 52 121055 631.68 813 793 190.4
D 2 250 69331 360.0 813 793 190.4

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