ASTROSAT CZTI

Data Quality Report

Orbit 12452

Creation date: 2024-06-27T16:27:36.067743
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_174T01_9000001850_12452cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12452cztM0_level2_quad_clean.evt
Size (bytes)707,736,96097,899,840
Size675.0 MB 93.4 MB
Events in quadrant A6,908,071592,561
Events in quadrant B5,256,392592,873
Events in quadrant C4,145,245613,250
Events in quadrant D4,554,024581,071

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265962
B0208411
C0178571
D0191991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84197528.932177%
B84198009.502316%
C84193133.717781%
D84194435.261908%

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 8785 8420 118 118 1.34% 1.40%
B 8785 8420 251 251 2.86% 2.98%
C 8785 8420 0 0 0.00% 0.00%
D 8785 8421 84 84 0.96% 1.00%

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 13 251 1740973 8027.45 1049 1023 216.7
A 0 23 441391 2031.69 1049 1023 216.7
A 1 162 231831 1064.86 1049 1023 216.7
B 4 239 862050 4167.81 1058 1031 206.6
B 11 51 117043 561.56 1058 1031 206.6
B 0 187 73038 348.55 1058 1031 206.6
C 15 208 31116 122.1 1055 1061 246.1
C 13 61 7884 27.72 1055 1061 246.1
C 3 202 2511 5.89 1055 1061 246.1
D 13 104 239239 953.3 1038 1008 249.9
D 8 195 225107 896.75 1038 1008 249.9
D 10 199 88125 348.61 1038 1008 249.9

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