ASTROSAT CZTI

Data Quality Report

Orbit 14410

Creation date: 2024-06-27T16:54:45.783347
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/AS1A04_186T01_9000002126_14410cztM0_level2.evt modeM0/AS1A04_186T01_9000002126_14410cztM0_level2_quad_clean.evt
Size (bytes)1,255,446,720199,578,240
Size1.2 GB 190.3 MB
Events in quadrant A7,093,6751,308,725
Events in quadrant B7,781,8671,258,622
Events in quadrant C10,097,6641,234,552
Events in quadrant D12,045,6131,217,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307384
B0327383
C0402033
D0459043

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A148651501.009082%
B148652741.843256%
C148651811.217625%
D1486514579.801547%

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 16791 14866 5 5 0.03% 0.03%
B 16791 14867 87 87 0.52% 0.59%
C 16791 14867 3 3 0.02% 0.02%
D 16791 14867 1160 1160 6.91% 7.80%

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 12 189 108867 298.04 1780 1748 359.4
A 8 15 63719 172.42 1780 1748 359.4
A 4 2 49085 131.71 1780 1748 359.4
B 0 85 404842 1199.34 1758 1715 336.1
B 0 229 188910 556.92 1758 1715 336.1
B 4 142 77855 226.52 1758 1715 336.1
C 3 233 3407313 8627.27 1700 1707 394.7
C 0 207 47997 117.26 1700 1707 394.7
C 13 61 12271 26.76 1700 1707 394.7
D 13 122 3453119 8669.67 1660 1619 398.1
D 10 199 949776 2381.63 1660 1619 398.1
D 12 110 384349 961.36 1660 1619 398.1

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