ASTROSAT CZTI

Data Quality Report

Orbit 20210409_A10_053T02_9000004290_level2

Creation date: 2025-12-23T21:13:13.701685
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/AS1A10_053T02_9000004290cztM0_level2.fits modeM0/AS1A10_053T02_9000004290cztM0_level2_quad_clean.evt
Size (bytes)299,655,360230,434,560
Size285.8 MB 219.8 MB
Events in quadrant A1,921,6201,358,246
Events in quadrant B1,781,1741,334,814
Events in quadrant C1,830,1781,258,095
Events in quadrant D1,451,474938,651

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0635610
B0924660
C0782510
D01360720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06160
B06160
C06160
D06160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303822710.891976%
B303824201.382397%
C303828942.942532%
D30382734624.178790%

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 35697 30383 0 0 0.00% 0.00%
B 35697 30382 0 0 0.00% 0.00%
C 35697 30373 0 0 0.00% 0.00%
D 35697 30324 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 1789 10.87 501 472 121.2
A 7 110 1553 8.92 501 472 121.2
A 9 19 1460 8.15 501 472 121.2
B 2 9 1391 9.84 472 450 95.6
B 5 128 1175 7.58 472 450 95.6
B 3 80 1156 7.39 472 450 95.6
C 1 81 1464 8.17 483 453 123.7
C 1 80 1407 7.71 483 453 123.7
C 12 241 1295 6.81 483 453 123.7
D 15 46 1153 7.06 414 379 109.7
D 3 14 1064 6.24 414 379 109.7
D 10 189 1037 6.0 414 379 109.7

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