ASTROSAT CZTI

Data Quality Report

Orbit 34200

Creation date: 2024-06-27T20:57:41.697333
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/AS1A11_047T15_9000004882_34200cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34200cztM0_level2_quad_clean.evt
Size (bytes)611,991,36055,353,600
Size583.6 MB 52.8 MB
Events in quadrant A2,824,677331,595
Events in quadrant B5,032,907333,345
Events in quadrant C3,363,369329,446
Events in quadrant D6,936,555291,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119613
B0185962
C0132272
D0244762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5564621.114306%
B556498317.667146%
C55641632.929547%
D5564113320.363048%

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 7207 5566 32 32 0.44% 0.57%
B 7207 5566 808 808 11.21% 14.52%
C 7207 5566 102 102 1.42% 1.83%
D 7207 5566 971 971 13.47% 17.45%

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 15 169 115272 842.09 670 656 136.1
A 9 143 77105 561.67 670 656 136.1
A 10 83 23593 168.52 670 656 136.1
B 5 31 898114 7405.09 631 615 121.2
B 5 15 736816 6074.25 631 615 121.2
B 5 172 459882 3789.32 631 615 121.2
C 0 10 371123 2460.32 647 653 150.6
C 15 214 253659 1680.23 647 653 150.6
C 14 254 171876 1137.11 647 653 150.6
D 2 249 2565779 16968.29 612 593 151.2
D 8 195 1202470 7950.22 612 593 151.2
D 2 250 332870 2197.96 612 593 151.2

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