ASTROSAT CZTI

Data Quality Report

Orbit 34775

Creation date: 2022-03-04T19:24:56.877179
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_34775cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34775cztM0_level2_quad_clean.evt
Size (bytes)515,422,08087,595,200
Size491.5 MB 83.5 MB
Events in quadrant A2,870,915564,484
Events in quadrant B4,164,039561,215
Events in quadrant C3,245,582576,589
Events in quadrant D4,927,517536,261

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123363
B0162152
C0130672
D0186052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5928130.219298%
B59283455.819838%
C5928601.012146%
D59281432.412281%

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 7210 5929 1 1 0.01% 0.02%
B 7210 5929 216 216 3.00% 3.64%
C 7210 5929 44 44 0.61% 0.74%
D 7210 5929 118 118 1.64% 1.99%

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 95191 673.1 695 681 140.4
A 10 83 49433 347.21 695 681 140.4
A 7 16 15568 106.03 695 681 140.4
B 5 172 977270 7486.68 677 658 130.4
B 5 255 260986 1995.67 677 658 130.4
B 5 200 105056 800.31 677 658 130.4
C 15 214 255072 1622.61 675 682 156.8
C 0 10 143548 911.26 675 682 156.8
C 14 67 120360 763.36 675 682 156.8
D 8 195 1416414 8588.12 673 654 164.9
D 10 118 567622 3439.27 673 654 164.9
D 12 6 82646 497.37 673 654 164.9

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