ASTROSAT CZTI

Data Quality Report

Orbit 26362

Creation date: 2024-06-27T19:28:12.100953
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/AS1A09_088T01_9000003812_26362cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26362cztM0_level2_quad_clean.evt
Size (bytes)722,257,920112,625,280
Size688.8 MB 107.4 MB
Events in quadrant A3,433,871757,928
Events in quadrant B3,495,417780,096
Events in quadrant C4,526,554736,563
Events in quadrant D9,917,593621,449

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151610
B0152230
C0179700
D0344990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7385851.150982%
B73861161.570539%
C73863765.090712%
D7386242532.832386%

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 8760 7387 0 0 0.00% 0.00%
B 8761 7388 0 0 0.00% 0.00%
C 8761 7388 139 139 1.59% 1.88%
D 8761 7387 1750 1750 19.97% 23.69%

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 13 254 11274 58.29 890 868 178.5
A 3 137 8255 41.38 890 868 178.5
A 0 226 7507 37.19 890 868 178.5
B 0 230 23059 131.09 888 863 169.3
B 12 111 20937 118.55 888 863 169.3
B 11 111 18571 104.58 888 863 169.3
C 4 254 711354 3537.83 863 866 200.8
C 3 233 311391 1546.24 863 866 200.8
C 14 238 136156 673.67 863 866 200.8
D 7 80 5115208 29216.39 741 724 175.1
D 1 52 1816034 10369.92 741 724 175.1
D 11 176 121649 690.78 741 724 175.1

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