ASTROSAT CZTI

Data Quality Report

Orbit 20170731_G07_047T01_9000001424_level2

Creation date: 2025-11-15T17:43:51.170384
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_047T01_9000001424cztM0_level2.fits modeM0/AS1G07_047T01_9000001424cztM0_level2_quad_clean.evt
Size (bytes)730,707,840684,429,120
Size696.9 MB 652.7 MB
Events in quadrant A4,360,8403,949,207
Events in quadrant B4,293,6984,039,341
Events in quadrant C4,412,6143,935,460
Events in quadrant D3,609,3243,355,488

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01958670
B01745420
C01629250
D02410860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016190
B016280
C016270
D016240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01320
C01330
D01350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7959037934.765674%
B7954614801.860559%
C795935590.702323%
D7897052946.703812%

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 95570 80663 0 0 0.00% 0.00%
B 95570 80611 0 0 0.00% 0.00%
C 95570 80649 0 0 0.00% 0.00%
D 95570 79867 0 0 0.00% 0.00%

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 29 4268 11.24 1132 1055 286.0
A 7 110 3725 9.34 1132 1055 286.0
A 0 30 3266 7.73 1132 1055 286.0
B 2 9 3745 11.87 1135 1079 224.6
B 12 226 2890 8.06 1135 1079 224.6
B 14 254 2886 8.05 1135 1079 224.6
C 12 241 3082 6.53 1166 1082 306.2
C 3 126 2926 6.02 1166 1082 306.2
C 2 191 2911 5.97 1166 1082 306.2
D 7 3 2635 6.18 1027 930 275.7
D 3 14 2619 6.13 1027 930 275.7
D 7 5 2589 6.02 1027 930 275.7

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