ASTROSAT CZTI

Data Quality Report

Orbit 37786

Creation date: 2024-06-27T21:44:25.958246
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/AS1T05_057T01_9000005346_37786cztM0_level2.evt modeM0/AS1T05_057T01_9000005346_37786cztM0_level2_quad_clean.evt
Size (bytes)472,654,08076,584,960
Size450.8 MB 73.0 MB
Events in quadrant A3,164,520479,964
Events in quadrant B3,234,352481,659
Events in quadrant C3,116,381481,801
Events in quadrant D4,385,232449,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131893
B0135492
C0129432
D0172272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6105170.278460%
B6105500.819001%
C6105360.589681%
D61051832.997543%

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 9002 6107 13 13 0.14% 0.21%
B 9002 6107 25 25 0.28% 0.41%
C 9002 6107 33 33 0.37% 0.54%
D 9002 6107 208 208 2.31% 3.41%

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 10 83 364633 2554.07 701 687 142.5
A 12 189 22639 154.05 701 687 142.5
A 7 16 21155 143.64 701 687 142.5
B 0 229 118135 867.17 696 678 135.4
B 4 81 93396 684.53 696 678 135.4
B 0 230 65116 475.74 696 678 135.4
C 15 214 278683 1717.76 683 688 161.8
C 0 10 116071 712.96 683 688 161.8
C 15 159 20029 119.51 683 688 161.8
D 1 239 373894 2250.15 676 657 165.9
D 7 223 312109 1877.66 676 657 165.9
D 1 47 295523 1777.67 676 657 165.9

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