ASTROSAT CZTI

Data Quality Report

Orbit 13449

Creation date: 2024-06-27T16:40:57.977470
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/AS1A04_103T01_9000001988_13449cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13449cztM0_level2_quad_clean.evt
Size (bytes)453,991,68095,595,840
Size433.0 MB 91.2 MB
Events in quadrant A3,278,604610,687
Events in quadrant B3,381,616627,355
Events in quadrant C3,248,915605,617
Events in quadrant D3,373,567573,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143073
B0145522
C0142502
D0149372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6859901.312145%
B68591101.603732%
C6859510.743549%
D68591071.559994%

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 6860 0 0 0.00% 0.00%
B 8890 6861 0 0 0.00% 0.00%
C 8890 6861 0 0 0.00% 0.00%
D 8890 6860 81 81 0.91% 1.18%

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 2 250 37732 213.33 840 820 173.0
A 1 162 8995 47.25 840 820 173.0
A 0 226 7514 38.69 840 820 173.0
B 4 142 32326 195.82 843 823 160.9
B 4 173 24241 145.57 843 823 160.9
B 12 111 18739 111.37 843 823 160.9
C 3 233 60273 315.84 811 814 188.3
C 8 128 12398 61.53 811 814 188.3
C 8 112 6254 28.9 811 814 188.3
D 13 249 218876 1137.84 799 776 191.7
D 2 136 66797 344.43 799 776 191.7
D 12 110 40510 207.29 799 776 191.7

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