ASTROSAT CZTI

Data Quality Report

Orbit 22509

Creation date: 2024-06-27T18:42:07.355384
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/AS1A08_003T01_9000003342_22509cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22509cztM0_level2_quad_clean.evt
Size (bytes)249,122,88049,400,640
Size237.6 MB 47.1 MB
Events in quadrant A1,752,692315,403
Events in quadrant B1,907,146321,911
Events in quadrant C1,810,731314,326
Events in quadrant D1,846,956308,399

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072911
B077591
C074531
D076771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3321882.649804%
B33211364.095152%
C33211323.974706%
D33211143.432701%

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 4591 3321 0 0 0.00% 0.00%
B 4591 3321 7 7 0.15% 0.21%
C 4591 3321 0 0 0.00% 0.00%
D 4591 3321 30 30 0.65% 0.90%

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 13 254 5388 53.54 454 444 92.3
A 0 226 3992 38.42 454 444 92.3
A 3 137 3813 36.48 454 444 92.3
B 15 33 105656 1187.66 451 440 88.6
B 5 172 25401 281.76 451 440 88.6
B 12 111 10269 110.95 451 440 88.6
C 14 238 68652 654.86 440 444 104.2
C 0 10 28230 266.77 440 444 104.2
C 13 61 2981 24.36 440 444 104.2
D 2 120 74128 676.45 444 433 108.9
D 1 52 49978 454.77 444 433 108.9
D 2 136 22607 203.54 444 433 108.9

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