ASTROSAT CZTI

Data Quality Report

Orbit 16655

Creation date: 2024-06-27T17:25:44.562890
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/AS1A05_078T01_9000002462_16655cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16655cztM0_level2_quad_clean.evt
Size (bytes)648,262,080138,591,360
Size618.2 MB 132.2 MB
Events in quadrant A3,585,865943,427
Events in quadrant B3,805,103962,410
Events in quadrant C3,812,806929,945
Events in quadrant D7,912,507831,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156793
B0161272
C0159512
D0289662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7624841.101784%
B7624971.272298%
C76241431.875656%
D7624114415.005247%

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 9195 7627 1 1 0.01% 0.01%
B 9195 7627 2 2 0.02% 0.03%
C 9195 7627 0 0 0.00% 0.00%
D 9195 7627 980 980 10.66% 12.85%

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 3 1 78556 424.83 908 889 182.8
A 15 174 8739 42.94 908 889 182.8
A 15 223 8215 40.07 908 889 182.8
B 15 35 102245 586.01 909 884 173.0
B 0 198 45841 259.92 909 884 173.0
B 0 189 37825 213.57 909 884 173.0
C 3 233 251465 1228.97 877 883 203.9
C 14 238 134811 656.85 877 883 203.9
C 13 61 6139 25.78 877 883 203.9
D 15 0 2203066 10938.55 833 807 201.3
D 2 16 1433430 7115.79 833 807 201.3
D 1 52 950870 4718.93 833 807 201.3

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