ASTROSAT CZTI

Data Quality Report

Orbit 38789

Creation date: 2024-06-27T21:56:26.105091
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/AS1A12_044T04_9000005396_38789cztM0_level2.fits modeM0/AS1A12_044T04_9000005396_38789cztM0_level2_quad_clean.evt
Size (bytes)511,375,680121,492,800
Size487.7 MB 115.9 MB
Events in quadrant A3,769,582825,507
Events in quadrant B3,901,533835,270
Events in quadrant C4,449,478787,309
Events in quadrant D6,232,872713,700

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158213
B0165732
C0180322
D0236222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7423180.242490%
B74231141.535767%
C74231211.630069%
D74233664.930621%

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 10348 7425 2 2 0.02% 0.03%
B 10348 7425 56 56 0.54% 0.75%
C 10348 7425 92 92 0.89% 1.24%
D 10348 7425 379 379 3.66% 5.10%

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 10 83 525315 3106.88 828 809 168.8
A 13 254 13661 76.13 828 809 168.8
A 9 143 11607 63.96 828 809 168.8
B 4 171 433512 2687.05 825 801 161.0
B 5 184 83392 512.87 825 801 161.0
B 15 85 49282 301.06 825 801 161.0
C 14 254 896867 4721.26 804 807 189.8
C 15 214 325617 1711.4 804 807 189.8
C 2 16 33274 171.07 804 807 189.8
D 12 235 1504991 7765.05 790 766 193.7
D 5 222 818995 4223.83 790 766 193.7
D 2 249 316856 1631.71 790 766 193.7

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