ASTROSAT CZTI

Data Quality Report

Orbit 18953

Creation date: 2024-06-27T17:57:01.461773
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/AS1A05_205T01_9000002824_18953cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18953cztM0_level2_quad_clean.evt
Size (bytes)820,422,72082,615,680
Size782.4 MB 78.8 MB
Events in quadrant A9,176,002408,773
Events in quadrant B6,549,934521,708
Events in quadrant C3,803,954521,228
Events in quadrant D4,790,987508,112

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324282
B0245982
C0163112
D0195512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7776209826.980453%
B7776118415.226337%
C77771852.378809%
D77772312.970297%

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 8366 7778 1481 1481 17.70% 19.04%
B 8366 7779 579 579 6.92% 7.44%
C 8367 7780 1 1 0.01% 0.01%
D 8367 7780 74 74 0.88% 0.95%

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 14 235 5813638 33035.91 854 834 176.0
A 6 16 64831 363.71 854 834 176.0
A 13 254 7470 37.71 854 834 176.0
B 3 112 2544114 14190.2 918 893 179.2
B 7 220 206026 1144.56 918 893 179.2
B 0 189 93409 516.2 918 893 179.2
C 14 238 142017 644.59 926 931 218.9
C 6 96 40058 178.76 926 931 218.9
C 3 233 14541 62.18 926 931 218.9
D 7 238 334228 1445.55 939 909 230.6
D 12 218 325864 1409.28 939 909 230.6
D 12 233 270729 1170.17 939 909 230.6

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