ASTROSAT CZTI

Data Quality Report

Orbit 16624

Creation date: 2024-06-27T17:25:16.486873
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/AS1A05_064T01_9000002450_16624cztM0_level2.evt modeM0/AS1A05_064T01_9000002450_16624cztM0_level2_quad_clean.evt
Size (bytes)678,447,360148,377,600
Size647.0 MB 141.5 MB
Events in quadrant A3,793,4431,001,865
Events in quadrant B4,076,1711,016,561
Events in quadrant C4,481,053976,393
Events in quadrant D7,626,573914,789

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173352
B0177441
C0186651
D0285171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8414720.855717%
B8414650.772522%
C84141061.259805%
D84148099.614928%

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 8890 8416 12 12 0.13% 0.14%
B 8890 8416 0 0 0.00% 0.00%
C 8890 8416 1 1 0.01% 0.01%
D 8890 8416 696 696 7.83% 8.27%

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 9 143 94871 489.57 957 935 191.9
A 15 223 8782 40.89 957 935 191.9
A 0 226 8411 38.96 957 935 191.9
B 15 35 91195 495.29 957 933 182.2
B 3 209 63292 342.18 957 933 182.2
B 0 198 48457 260.78 957 933 182.2
C 3 233 717399 3368.23 914 920 212.7
C 14 238 142915 667.53 914 920 212.7
C 0 207 18922 84.63 914 920 212.7
D 1 52 4082689 18607.05 896 866 219.4
D 10 70 129038 584.27 896 866 219.4
D 2 234 35816 159.32 896 866 219.4

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