ASTROSAT CZTI

Data Quality Report

Orbit 34790

Creation date: 2022-03-05T19:34:16.237553
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/AS1C07_004T01_9000004990_34790cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34790cztM0_level2_quad_clean.evt
Size (bytes)497,854,08089,038,080
Size474.8 MB 84.9 MB
Events in quadrant A3,028,104571,133
Events in quadrant B3,665,789572,946
Events in quadrant C3,186,990582,156
Events in quadrant D4,778,750539,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128222
B0147551
C0131681
D0184411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A617370.113397%
B61731883.045521%
C6173340.550786%
D61731532.478536%

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 8828 6175 0 0 0.00% 0.00%
B 8828 6175 131 131 1.48% 2.12%
C 8828 6175 26 26 0.29% 0.42%
D 8828 6175 127 127 1.44% 2.06%

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 15 169 101194 689.0 725 710 145.8
A 10 83 50173 339.16 725 710 145.8
A 15 174 46346 312.92 725 710 145.8
B 5 172 558652 4003.23 716 696 139.4
B 5 255 148096 1057.56 716 696 139.4
B 3 112 37676 265.32 716 696 139.4
C 15 214 263514 1593.84 704 710 164.9
C 0 10 103564 623.78 704 710 164.9
C 14 67 43191 257.64 704 710 164.9
D 8 195 1359841 7920.69 699 679 171.6
D 2 250 218472 1269.22 699 679 171.6
D 10 118 110270 638.66 699 679 171.6

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