ASTROSAT CZTI

Data Quality Report

Orbit 35772

Creation date: 2024-06-27T21:17:57.684629
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/AS1A10_058T14_9000005134_35772cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35772cztM0_level2_quad_clean.evt
Size (bytes)416,257,92066,453,120
Size397.0 MB 63.4 MB
Events in quadrant A2,585,753424,284
Events in quadrant B3,537,948417,273
Events in quadrant C2,824,996399,143
Events in quadrant D3,289,003391,734

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111933
B0140172
C0118012
D0133112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A542450.092183%
B54242654.885693%
C5424941.733038%
D54241372.525811%

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 7128 5425 1 1 0.01% 0.02%
B 7128 5425 181 181 2.54% 3.34%
C 7128 5425 86 86 1.21% 1.59%
D 7128 5425 114 114 1.60% 2.10%

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 160800 1261.06 623 611 127.0
A 13 6 12239 91.54 623 611 127.0
A 3 137 6426 45.78 623 611 127.0
B 5 172 500449 4251.28 610 596 117.6
B 5 255 425390 3612.9 610 596 117.6
B 0 197 49353 414.68 610 596 117.6
C 0 10 247464 1779.86 593 597 138.7
C 15 214 228537 1643.4 593 597 138.7
C 9 187 27788 196.04 593 597 138.7
D 13 249 364637 2495.12 594 576 145.9
D 10 118 240954 1647.45 594 576 145.9
D 7 223 120488 821.83 594 576 145.9

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