ASTROSAT CZTI

Data Quality Report

Orbit 16867

Creation date: 2024-06-27T17:28:54.537426
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_034T01_9000002500_16867cztM0_level2.evt modeM0/AS1T03_034T01_9000002500_16867cztM0_level2_quad_clean.evt
Size (bytes)697,478,40066,712,320
Size665.2 MB 63.6 MB
Events in quadrant A3,889,567383,736
Events in quadrant B4,066,107385,702
Events in quadrant C3,630,196374,908
Events in quadrant D9,031,904355,488

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164223
B0166312
C0155302
D0320452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74681431.914837%
B74681782.383503%
C74681752.343332%
D7469149119.962512%

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 7719 7470 6 6 0.08% 0.08%
B 7719 7470 20 20 0.26% 0.27%
C 7719 7470 0 0 0.00% 0.00%
D 7720 7471 970 970 12.56% 12.98%

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 0 23 153072 796.13 933 912 191.1
A 15 174 135103 702.11 933 912 191.1
A 0 226 17387 86.2 933 912 191.1
B 10 16 184188 1016.82 928 903 180.3
B 15 35 82424 452.26 928 903 180.3
B 0 229 44702 242.99 928 903 180.3
C 14 238 135194 634.06 895 902 211.8
C 13 61 6353 25.74 895 902 211.8
C 7 247 3730 13.35 895 902 211.8
D 1 52 5579883 26549.88 851 827 210.1
D 10 70 114770 542.24 851 827 210.1
D 2 234 36644 170.45 851 827 210.1

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