ASTROSAT CZTI

Data Quality Report

Orbit 12540

Creation date: 2024-06-27T16:28:54.252919
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_130T01_9000001856_12540cztM0_level2.evt modeM0/AS1A04_130T01_9000001856_12540cztM0_level2_quad_clean.evt
Size (bytes)614,540,16087,664,320
Size586.1 MB 83.6 MB
Events in quadrant A4,145,304535,739
Events in quadrant B6,177,896516,314
Events in quadrant C3,653,890538,784
Events in quadrant D4,100,474516,828

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171853
B0235572
C0162722
D0175052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78692803.558267%
B7869132916.889058%
C78691251.588512%
D78692373.011819%

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 8080 7871 0 0 0.00% 0.00%
B 8080 7870 885 885 10.95% 11.25%
C 8080 7871 0 0 0.00% 0.00%
D 8080 7871 80 80 0.99% 1.02%

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 1 162 148842 754.91 953 929 195.9
A 8 15 91914 464.37 953 929 195.9
A 1 178 86475 436.61 953 929 195.9
B 3 64 2287258 13161.62 895 870 173.7
B 4 239 286033 1641.54 895 870 173.7
B 0 205 29370 164.06 895 870 173.7
C 13 61 6878 27.2 934 937 218.4
C 8 128 5380 20.34 934 937 218.4
C 14 234 2652 7.85 934 937 218.4
D 1 52 208138 930.71 926 894 222.7
D 10 157 151164 674.84 926 894 222.7
D 13 249 88155 391.88 926 894 222.7

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