ASTROSAT CZTI

Data Quality Report

Orbit 15621

Creation date: 2024-06-27T17:11:15.486058
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/AS1T02_086T01_9000002316_15621cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15621cztM0_level2_quad_clean.evt
Size (bytes)466,179,840107,850,240
Size444.6 MB 102.9 MB
Events in quadrant A3,267,463702,035
Events in quadrant B3,582,294705,914
Events in quadrant C3,266,485694,483
Events in quadrant D3,530,135680,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142592
B0149921
C0142791
D0149241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69371181.701023%
B69371782.565951%
C69371301.874009%
D69371031.484792%

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 7418 6938 0 0 0.00% 0.00%
B 7418 6938 37 37 0.50% 0.53%
C 7418 6938 0 0 0.00% 0.00%
D 7418 6938 13 13 0.18% 0.19%

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 3 80 23199 131.37 840 824 170.3
A 0 226 7511 39.26 840 824 170.3
A 12 194 6357 32.49 840 824 170.3
B 5 65 136997 862.68 832 814 157.9
B 3 209 54020 337.05 832 814 157.9
B 0 197 40820 253.43 832 814 157.9
C 14 238 124297 663.29 801 804 186.2
C 3 233 12202 61.22 801 804 186.2
C 13 61 5683 26.21 801 804 186.2
D 1 52 323629 1628.48 818 791 198.2
D 13 172 51663 256.61 818 791 198.2
D 2 234 29986 147.27 818 791 198.2

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