ASTROSAT CZTI

Data Quality Report

Orbit 21031

Creation date: 2024-06-27T18:22:43.305775
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_088T02_9000003106_21031cztM0_level2.evt modeM0/AS1A05_088T02_9000003106_21031cztM0_level2_quad_clean.evt
Size (bytes)476,311,68083,977,920
Size454.2 MB 80.1 MB
Events in quadrant A3,096,356545,224
Events in quadrant B3,458,433554,268
Events in quadrant C3,134,394519,970
Events in quadrant D4,320,549496,341

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128142
B0140682
C0129322
D0168602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6122190.310356%
B6122490.800392%
C6122280.457367%
D61223115.080039%

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 7497 6123 0 0 0.00% 0.00%
B 7497 6123 19 19 0.25% 0.31%
C 7497 6123 0 0 0.00% 0.00%
D 7497 6123 308 308 4.11% 5.03%

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 13 254 8014 45.16 804 790 160.0
A 0 226 6880 38.07 804 790 160.0
A 3 137 6124 33.34 804 790 160.0
B 0 189 116231 769.37 810 791 150.0
B 7 220 106649 705.51 810 791 150.0
B 0 230 20690 132.62 810 791 150.0
C 14 238 122352 677.57 772 780 179.4
C 13 61 5351 25.48 772 780 179.4
C 9 54 4044 18.19 772 780 179.4
D 1 52 1191793 6467.69 758 739 184.2
D 7 223 134580 726.79 758 739 184.2
D 15 0 61638 330.69 758 739 184.2

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