ASTROSAT CZTI

Data Quality Report

Orbit 30597

Creation date: 2024-06-27T20:17:27.326312
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_058T03_9000004408_30597cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30597cztM0_level2_quad_clean.evt
Size (bytes)645,436,80066,548,160
Size615.5 MB 63.5 MB
Events in quadrant A3,273,787414,282
Events in quadrant B5,138,110413,920
Events in quadrant C4,641,020352,027
Events in quadrant D6,052,863379,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136962
B0199082
C0182973
D0228742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6528330.505515%
B65281061.623775%
C6528172926.485907%
D65281973.017770%

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 7638 6529 0 0 0.00% 0.00%
B 7638 6529 9 9 0.12% 0.14%
C 7638 6529 28 28 0.37% 0.43%
D 7638 6529 107 107 1.40% 1.64%

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 8 192 11321 62.32 846 830 168.3
A 13 254 11297 62.18 846 830 168.3
A 3 137 8254 44.1 846 830 168.3
B 6 159 1784896 11140.68 841 821 160.1
B 0 229 29380 178.34 841 821 160.1
B 4 171 23667 142.66 841 821 160.1
C 14 254 751134 4365.91 736 741 171.9
C 14 238 699064 4062.96 736 741 171.9
C 0 10 181562 1052.05 736 741 171.9
D 8 195 2262974 11826.75 808 787 191.3
D 1 52 292981 1527.59 808 787 191.3
D 13 249 251743 1312.0 808 787 191.3

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