ASTROSAT CZTI

Data Quality Report

Orbit 18337

Creation date: 2024-06-27T17:48:31.309607
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/AS1A06_006T01_9000002720_18337cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18337cztM0_level2_quad_clean.evt
Size (bytes)463,746,24076,705,920
Size442.3 MB 73.2 MB
Events in quadrant A3,201,110473,895
Events in quadrant B3,534,572480,389
Events in quadrant C3,292,886466,541
Events in quadrant D3,575,257449,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134341
B0145231
C0135441
D0147161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6489230.354446%
B6489661.017106%
C6489540.832178%
D6489661.017106%

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 7724 6490 1 1 0.01% 0.02%
B 7724 6490 12 12 0.16% 0.18%
C 7724 6490 0 0 0.00% 0.00%
D 7724 6490 33 33 0.43% 0.51%

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 15 174 10738 59.55 829 813 166.7
A 0 226 7230 38.5 829 813 166.7
A 4 2 7069 37.53 829 813 166.7
B 7 220 193222 1220.3 835 820 157.7
B 0 197 24274 148.76 835 820 157.7
B 0 198 20934 127.57 835 820 157.7
C 14 238 126698 679.64 801 807 185.2
C 3 233 39373 208.2 801 807 185.2
C 13 61 5632 26.05 801 807 185.2
D 1 52 322853 1660.81 802 781 193.9
D 7 223 58033 295.23 802 781 193.9
D 7 238 38583 194.93 802 781 193.9

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