ASTROSAT CZTI

Data Quality Report

Orbit 21055

Creation date: 2024-06-27T18:23:01.540827
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_025T04_9000003110_21055cztM0_level2.evt modeM0/AS1A05_025T04_9000003110_21055cztM0_level2_quad_clean.evt
Size (bytes)531,996,48070,859,520
Size507.4 MB 67.6 MB
Events in quadrant A3,206,271431,922
Events in quadrant B3,551,330435,320
Events in quadrant C3,211,881414,433
Events in quadrant D5,683,996393,063

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139202
B0147492
C0138582
D0213872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6755530.784604%
B6755701.036269%
C6755751.110289%
D67556369.415248%

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 7740 6756 0 0 0.00% 0.00%
B 7740 6756 4 4 0.05% 0.06%
C 7740 6756 0 0 0.00% 0.00%
D 7740 6756 529 529 6.83% 7.83%

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 13 254 8325 44.72 831 814 168.0
A 0 226 7324 38.76 831 814 168.0
A 12 96 6957 36.57 831 814 168.0
B 0 219 169212 1079.14 825 805 156.1
B 0 190 40637 255.24 825 805 156.1
B 7 220 29607 184.56 825 805 156.1
C 14 238 125729 678.95 788 792 184.0
C 3 9 10373 52.06 788 792 184.0
C 13 61 5560 25.91 788 792 184.0
D 1 52 2248264 12017.87 775 752 187.0
D 7 238 171396 912.47 775 752 187.0
D 12 233 168183 895.29 775 752 187.0

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