ASTROSAT CZTI

Data Quality Report

Orbit 21695

Creation date: 2024-06-27T18:31:10.502011
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/AS1A07_006T04_9000003210_21695cztM0_level2.evt modeM0/AS1A07_006T04_9000003210_21695cztM0_level2_quad_clean.evt
Size (bytes)564,860,160103,181,760
Size538.7 MB 98.4 MB
Events in quadrant A3,058,151695,408
Events in quadrant B4,009,649633,863
Events in quadrant C4,307,670690,774
Events in quadrant D5,294,091654,322

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133231
B0161741
C0173161
D0201711

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454270.418345%
B64556309.759876%
C64552744.244771%
D64553395.251743%

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 7539 6455 0 0 0.00% 0.00%
B 7540 6456 330 330 4.38% 5.11%
C 7540 6456 57 57 0.76% 0.88%
D 7540 6456 283 283 3.75% 4.38%

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 15 236 141607 927.96 755 737 151.8
A 13 254 11531 71.1 755 737 151.8
A 0 226 6385 37.21 755 737 151.8
B 3 64 1216254 9375.11 692 674 129.7
B 0 229 32398 244.67 692 674 129.7
B 0 197 25507 191.52 692 674 129.7
C 8 208 1214426 6953.26 742 745 174.5
C 14 238 116520 663.28 742 745 174.5
C 10 22 75314 427.21 742 745 174.5
D 7 238 1110775 6225.85 737 716 178.3
D 1 52 973525 5456.07 737 716 178.3
D 12 235 143199 799.13 737 716 178.3

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