ASTROSAT CZTI

Data Quality Report

Orbit 16561

Creation date: 2024-06-27T17:24:25.477614
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/AS1T03_018T01_9000002442_16561cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16561cztM0_level2_quad_clean.evt
Size (bytes)507,248,64073,964,160
Size483.8 MB 70.5 MB
Events in quadrant A3,535,161443,169
Events in quadrant B3,901,024452,325
Events in quadrant C3,665,198442,492
Events in quadrant D3,785,168413,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147983
B0160252
C0150342
D0161312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6993721.029601%
B69931472.102102%
C69931171.673102%
D69933795.419705%

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 7854 6995 14 14 0.18% 0.20%
B 7854 6995 22 22 0.28% 0.31%
C 7854 6995 0 0 0.00% 0.00%
D 7854 6995 34 34 0.43% 0.49%

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 11 29 113859 652.98 850 831 173.1
A 15 174 100703 576.97 850 831 173.1
A 9 143 24803 138.49 850 831 173.1
B 15 35 366373 2192.75 859 840 166.7
B 4 48 44424 261.45 859 840 166.7
B 0 198 30535 178.13 859 840 166.7
C 3 233 315991 1630.0 823 828 193.4
C 14 238 125352 644.03 823 828 193.4
C 7 247 12999 62.95 823 828 193.4
D 5 222 418333 2124.53 800 776 196.5
D 1 52 272291 1381.47 800 776 196.5
D 10 70 50378 252.37 800 776 196.5

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