ASTROSAT CZTI

Data Quality Report

Orbit 03627

Creation date: 2024-06-27T14:31:43.832071
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/AS1G05_234T02_9000000474_03627cztM0_level2.evt modeM0/AS1G05_234T02_9000000474_03627cztM0_level2_quad_clean.evt
Size (bytes)1,590,684,480239,019,840
Size1.5 GB 227.9 MB
Events in quadrant A10,963,6081,424,499
Events in quadrant B12,791,1221,420,665
Events in quadrant C12,057,7301,407,708
Events in quadrant D10,782,4501,377,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0494825
B05386610
C0526804
D0497194

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A233592351.006036%
B233572260.967590%
C233593001.284302%
D233592270.971788%

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 38825 23364 74 74 0.19% 0.32%
B 38825 23364 33 33 0.08% 0.14%
C 38825 23363 141 141 0.36% 0.60%
D 38825 23364 126 126 0.32% 0.54%

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 0 31 560985 1056.69 2596 2534 528.5
A 0 50 145387 270.3 2596 2534 528.5
A 0 199 104740 193.39 2596 2534 528.5
B 15 204 1141614 2240.72 2645 2578 508.3
B 3 0 437414 855.41 2645 2578 508.3
B 0 182 255336 497.23 2645 2578 508.3
C 2 53 1156107 1958.12 2535 2542 589.1
C 9 247 812623 1375.07 2535 2542 589.1
C 1 16 85759 141.26 2535 2542 589.1
D 13 239 237671 384.52 2526 2451 611.7
D 13 25 157353 253.22 2526 2451 611.7
D 7 223 141085 226.63 2526 2451 611.7

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
Veto Counter