ASTROSAT CZTI

Data Quality Report

Orbit 25214

Creation date: 2024-06-27T19:15:09.079635
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_097T01_9000003692_25214cztM0_level2.evt modeM0/AS1A07_097T01_9000003692_25214cztM0_level2_quad_clean.evt
Size (bytes)710,556,48065,851,200
Size677.6 MB 62.8 MB
Events in quadrant A3,623,803409,596
Events in quadrant B4,009,242409,277
Events in quadrant C3,692,311388,698
Events in quadrant D9,760,890339,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147680
B0160110
C0149550
D0334370

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6396841.313321%
B63972293.579803%
C63971412.204158%
D6397264041.269345%

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 7676 6397 0 0 0.00% 0.00%
B 7677 6398 77 77 1.00% 1.20%
C 7677 6398 2 2 0.03% 0.03%
D 7677 6398 2107 2107 27.45% 32.93%

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 10226 50.3 940 927 184.9
A 0 226 8281 39.78 940 927 184.9
A 3 137 7692 36.59 940 927 184.9
B 3 64 315446 1859.64 912 895 169.1
B 0 190 63096 367.74 912 895 169.1
B 0 189 28901 165.57 912 895 169.1
C 14 238 146838 718.11 884 893 203.2
C 7 247 53205 257.4 884 893 203.2
C 2 16 29108 138.83 884 893 203.2
D 1 52 5293165 30419.58 714 696 174.0
D 12 233 794910 4564.91 714 696 174.0
D 10 70 375901 2156.57 714 696 174.0

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