ASTROSAT CZTI

Data Quality Report

Orbit 21104

Creation date: 2024-06-27T18:23:36.330794
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_163T01_9000003118_21104cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21104cztM0_level2_quad_clean.evt
Size (bytes)594,083,52092,831,040
Size566.6 MB 88.5 MB
Events in quadrant A3,117,464621,766
Events in quadrant B3,354,482636,004
Events in quadrant C3,167,738594,237
Events in quadrant D7,936,373529,409

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129902
B0135802
C0130182
D0279382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6152140.227568%
B6151500.812876%
C6151380.617786%
D615164210.437327%

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 7547 6153 0 0 0.00% 0.00%
B 7546 6152 1 1 0.01% 0.02%
C 7546 6152 0 0 0.00% 0.00%
D 7546 6152 825 825 10.93% 13.41%

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 10124 58.08 807 795 160.6
A 0 226 7076 39.1 807 795 160.6
A 3 137 6071 32.85 807 795 160.6
B 0 219 74591 492.1 812 794 150.0
B 7 220 51281 336.66 812 794 150.0
B 12 111 17423 110.89 812 794 150.0
C 14 238 123026 682.67 773 782 179.1
C 7 221 20328 109.15 773 782 179.1
C 10 91 6358 31.14 773 782 179.1
D 1 52 2623890 14430.49 752 732 181.8
D 1 20 1613390 8871.54 752 732 181.8
D 7 238 357017 1959.99 752 732 181.8

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