ASTROSAT CZTI

Data Quality Report

Orbit 27078

Creation date: 2024-06-27T19:36:14.496830
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/AS1T03_236T01_9000003908_27078cztM0_level2.evt modeM0/AS1T03_236T01_9000003908_27078cztM0_level2_quad_clean.evt
Size (bytes)669,792,96069,768,000
Size638.8 MB 66.5 MB
Events in quadrant A4,640,396425,239
Events in quadrant B7,201,660373,975
Events in quadrant C3,387,539438,421
Events in quadrant D4,614,091419,507

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181460
B0258310
C0142050
D0182390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65222273.480527%
B6522165125.314321%
C65221031.579270%
D65222163.311868%

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 7597 6523 127 127 1.67% 1.95%
B 7597 6523 1453 1453 19.13% 22.28%
C 7597 6523 1 1 0.01% 0.02%
D 7597 6523 154 154 2.03% 2.36%

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 14 235 1339036 7828.19 849 833 170.9
A 12 189 14686 81.04 849 833 170.9
A 13 254 9902 53.05 849 833 170.9
B 0 189 4029062 27838.08 761 743 144.7
B 3 112 153021 1052.33 761 743 144.7
B 10 246 22404 149.69 761 743 144.7
C 14 238 132361 677.73 829 835 194.1
C 15 208 20504 101.35 829 835 194.1
C 13 61 5599 24.55 829 835 194.1
D 1 52 1194029 6026.64 827 805 198.0
D 2 250 228451 1149.78 827 805 198.0
D 2 234 28932 142.06 827 805 198.0

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