ASTROSAT CZTI

Data Quality Report

Orbit 37429

Creation date: 2024-06-27T21:39:52.909943
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/AS1A09_002T01_9000005322_37429cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37429cztM0_level2_quad_clean.evt
Size (bytes)416,946,24078,736,320
Size397.6 MB 75.1 MB
Events in quadrant A2,776,675506,409
Events in quadrant B3,370,175505,983
Events in quadrant C3,037,120505,598
Events in quadrant D3,072,103484,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117303
B0135802
C0124872
D0129152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5463250.457624%
B54632123.880652%
C54631242.269815%
D5463721.317957%

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 7136 5464 13 13 0.18% 0.24%
B 7136 5464 175 175 2.45% 3.20%
C 7136 5464 110 110 1.54% 2.01%
D 7136 5464 69 69 0.97% 1.26%

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 301980 2430.89 609 598 124.0
A 9 143 37149 294.81 609 598 124.0
A 10 255 21230 166.41 609 598 124.0
B 0 189 331885 2899.02 597 581 114.3
B 4 171 291280 2543.71 597 581 114.3
B 5 172 262118 2288.54 597 581 114.3
C 14 254 292130 2119.32 586 590 137.6
C 15 214 230024 1667.84 586 590 137.6
C 0 10 189177 1370.91 586 590 137.6
D 10 253 174986 1229.92 587 570 141.8
D 13 249 168865 1186.75 587 570 141.8
D 2 153 131818 925.51 587 570 141.8

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