ASTROSAT CZTI

Data Quality Report

Orbit 19144

Creation date: 2024-06-27T17:59:29.865369
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/AS1A05_046T01_9000002838_19144cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19144cztM0_level2_quad_clean.evt
Size (bytes)1,669,322,880256,973,760
Size1.6 GB 245.1 MB
Events in quadrant A10,648,8301,562,297
Events in quadrant B12,315,9871,596,402
Events in quadrant C11,278,3511,549,199
Events in quadrant D14,771,2161,504,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466684
B0512094
C0477784
D0593164

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228023701.622665%
B228035962.613691%
C228035112.240933%
D2280416127.068935%

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 37988 22804 0 0 0.00% 0.00%
B 37988 22806 105 105 0.28% 0.46%
C 37988 22807 29 29 0.08% 0.13%
D 37989 22808 1223 1223 3.22% 5.36%

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 0 226 23962 38.31 2758 2695 555.1
A 13 254 23622 37.7 2758 2695 555.1
A 3 137 21928 34.65 2758 2695 555.1
B 6 36 517070 982.36 2749 2676 523.6
B 7 220 434323 824.33 2749 2676 523.6
B 3 64 299352 566.57 2749 2676 523.6
C 14 238 412275 652.61 2668 2680 627.6
C 3 233 314431 496.72 2668 2680 627.6
C 0 207 144885 226.58 2668 2680 627.6
D 1 52 4393304 6893.27 2630 2555 637.0
D 11 176 164067 253.57 2630 2555 637.0
D 1 20 137670 212.12 2630 2555 637.0

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