ASTROSAT CZTI

Data Quality Report

Orbit 12565

Creation date: 2024-06-27T16:29:17.702858
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/AS1C03_021T01_9000001864_12565cztM0_level2.evt modeM0/AS1C03_021T01_9000001864_12565cztM0_level2_quad_clean.evt
Size (bytes)463,775,04097,292,160
Size442.3 MB 92.8 MB
Events in quadrant A3,211,084626,791
Events in quadrant B3,693,179642,071
Events in quadrant C3,121,034625,882
Events in quadrant D3,569,240588,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139743
B0153092
C0137342
D0153282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6640410.617470%
B66401352.033133%
C6640270.406627%
D66401111.671687%

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 7816 6642 1 1 0.01% 0.02%
B 7816 6642 66 66 0.84% 0.99%
C 7816 6642 0 0 0.00% 0.00%
D 7816 6642 76 76 0.97% 1.14%

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 12 189 30046 175.42 816 799 166.7
A 12 96 16894 96.54 816 799 166.7
A 1 162 8085 43.7 816 799 166.7
B 4 239 301185 1913.14 823 803 157.0
B 3 64 128117 810.87 823 803 157.0
B 11 51 40970 255.82 823 803 157.0
C 13 61 5810 26.94 800 807 185.7
C 0 15 2316 8.12 800 807 185.7
C 14 67 2223 7.62 800 807 185.7
D 1 52 260304 1385.45 782 761 187.3
D 7 223 172238 915.35 782 761 187.3
D 13 104 42431 222.44 782 761 187.3

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