ASTROSAT CZTI

Data Quality Report

Orbit 08274

Creation date: 2024-06-27T15:30:26.795437
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/AS1G07_065T02_9000001150_08274cztM0_level2.evt modeM0/AS1G07_065T02_9000001150_08274cztM0_level2_quad_clean.evt
Size (bytes)456,088,32097,539,840
Size435.0 MB 93.0 MB
Events in quadrant A3,066,936626,183
Events in quadrant B3,282,611639,492
Events in quadrant C3,018,671627,551
Events in quadrant D3,989,022593,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137429
B01413215
C01363910
D01649129

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6704660.984487%
B6701570.850619%
C6703400.596748%
D66981532.284264%

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 7682 6708 11 11 0.14% 0.16%
B 7682 6707 1 1 0.01% 0.01%
C 7682 6708 0 0 0.00% 0.00%
D 7682 6708 97 97 1.26% 1.45%

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 15 234 49274 303.26 782 764 160.0
A 13 248 8885 50.77 782 764 160.0
A 0 226 7375 41.33 782 764 160.0
B 0 214 95404 631.62 791 772 149.8
B 11 51 52351 344.26 791 772 149.8
B 10 16 21632 139.23 791 772 149.8
C 9 54 7997 40.35 772 774 179.0
C 13 61 5889 28.57 772 774 179.0
C 3 202 1939 6.51 772 774 179.0
D 1 52 468549 2347.98 753 735 199.2
D 13 105 365819 1832.38 753 735 199.2
D 8 230 148731 742.8 753 735 199.2

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