ASTROSAT CZTI

Data Quality Report

Orbit 10925

Creation date: 2024-06-27T16:05:43.728396
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/AS1A04_109T01_9000001578_10925cztM0_level2.evt modeM0/AS1A04_109T01_9000001578_10925cztM0_level2_quad_clean.evt
Size (bytes)518,368,32093,908,160
Size494.4 MB 89.6 MB
Events in quadrant A4,418,690596,619
Events in quadrant B4,136,881606,176
Events in quadrant C3,096,409614,398
Events in quadrant D3,608,294575,634

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174453
B0164022
C0134922
D0150522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64682083.215832%
B64683114.808287%
C6468681.051330%
D64682373.664193%

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 7608 6468 91 91 1.20% 1.41%
B 7608 6468 147 147 1.93% 2.27%
C 7608 6468 0 0 0.00% 0.00%
D 7608 6468 153 153 2.01% 2.37%

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 5 913922 5638.79 805 789 161.9
A 13 251 160137 984.01 805 789 161.9
A 15 223 105164 644.54 805 789 161.9
B 4 239 941162 6237.85 799 780 150.8
B 11 51 32330 209.28 799 780 150.8
B 0 214 21378 136.63 799 780 150.8
C 13 61 5864 27.82 793 799 182.0
C 8 222 3229 13.35 793 799 182.0
C 5 207 2464 9.15 793 799 182.0
D 1 52 268206 1426.45 783 759 187.5
D 5 97 160170 850.23 783 759 187.5
D 13 104 96595 511.15 783 759 187.5

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