ASTROSAT CZTI

Data Quality Report

Orbit 13856

Creation date: 2024-06-27T16:47:00.753866
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/AS1A04_199T01_9000002040_13856cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13856cztM0_level2_quad_clean.evt
Size (bytes)384,465,60065,427,840
Size366.7 MB 62.4 MB
Events in quadrant A2,444,248408,501
Events in quadrant B2,524,190411,833
Events in quadrant C2,508,799406,981
Events in quadrant D3,809,081386,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108651
B0109351
C0109361
D0148551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52441342.555301%
B52441562.974828%
C52441011.926011%
D52442304.385965%

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 5715 5245 0 0 0.00% 0.00%
B 5715 5245 1 1 0.02% 0.02%
C 5715 5245 0 0 0.00% 0.00%
D 5715 5245 127 127 2.22% 2.42%

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 8 15 9096 64.21 632 616 132.1
A 0 226 5772 39.04 632 616 132.1
A 1 162 5186 34.6 632 616 132.1
B 0 219 30721 242.88 628 612 124.0
B 4 80 16977 132.01 628 612 124.0
B 12 111 14903 115.28 628 612 124.0
C 3 233 116663 804.55 613 616 144.2
C 13 61 4248 25.18 613 616 144.2
C 14 220 2199 10.97 613 616 144.2
D 13 122 618230 4125.31 608 594 149.7
D 10 157 335471 2236.71 608 594 149.7
D 1 52 252313 1681.28 608 594 149.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter