ASTROSAT CZTI

Data Quality Report

Orbit 37735

Creation date: 2024-06-27T21:43:46.363106
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_106T02_9000005344_37735cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37735cztM0_level2_quad_clean.evt
Size (bytes)664,058,88064,851,840
Size633.3 MB 61.8 MB
Events in quadrant A6,003,135291,802
Events in quadrant B2,910,542459,478
Events in quadrant C2,786,465457,455
Events in quadrant D8,052,382382,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211413
B0120002
C0114132
D0275852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5303141826.739581%
B5303911.716010%
C5303561.056006%
D5303187535.357345%

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 7096 5304 1411 1411 19.88% 26.60%
B 7095 5302 70 70 0.99% 1.32%
C 7095 5302 56 56 0.79% 1.06%
D 7095 5302 1917 1917 27.02% 36.16%

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 15 222 3782018 38960.45 480 471 97.1
A 10 83 267547 2751.63 480 471 97.1
A 9 143 59155 604.61 480 471 97.1
B 5 255 171541 1502.31 602 586 113.8
B 4 81 118729 1038.21 602 586 113.8
B 0 189 108266 946.26 602 586 113.8
C 15 214 229297 1663.53 592 597 137.5
C 0 10 190653 1382.44 592 597 137.5
C 0 207 22165 156.88 592 597 137.5
D 7 223 2182334 17407.28 513 497 125.3
D 12 227 1518211 12108.73 513 497 125.3
D 2 249 1392601 11106.58 513 497 125.3

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