ASTROSAT CZTI

Data Quality Report

Orbit 12609

Creation date: 2024-06-27T16:29:57.155353
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/AS1G08_071T01_9000001874_12609cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12609cztM0_level2_quad_clean.evt
Size (bytes)468,276,48088,257,600
Size446.6 MB 84.2 MB
Events in quadrant A2,984,128557,051
Events in quadrant B3,718,703571,755
Events in quadrant C3,209,371565,167
Events in quadrant D3,833,001530,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133383
B0155342
C0140132
D0159932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6427200.311187%
B64271832.847363%
C6427771.198071%
D64271101.711529%

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 7473 6429 0 0 0.00% 0.00%
B 7473 6429 73 73 0.98% 1.14%
C 7473 6429 67 67 0.90% 1.04%
D 7473 6429 60 60 0.80% 0.93%

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 3 1 35370 224.04 760 743 154.6
A 12 189 25662 161.23 760 743 154.6
A 0 226 6644 38.18 760 743 154.6
B 4 239 457449 3129.94 765 747 145.9
B 0 85 218782 1494.27 765 747 145.9
B 0 214 30602 204.61 765 747 145.9
C 15 208 268970 1558.28 746 750 172.1
C 14 234 32496 184.43 746 750 172.1
C 13 61 5417 27.11 746 750 172.1
D 1 52 690474 3941.07 730 710 175.0
D 10 157 266631 1519.38 730 710 175.0
D 10 199 39518 221.74 730 710 175.0

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