ASTROSAT CZTI

Data Quality Report

Orbit 30790

Creation date: 2024-06-27T20:19:39.348088
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/AS1A10_071T18_9000004448_30790cztM0_level2.evt modeM0/AS1A10_071T18_9000004448_30790cztM0_level2_quad_clean.evt
Size (bytes)674,357,76077,520,960
Size643.1 MB 73.9 MB
Events in quadrant A3,494,049496,140
Events in quadrant B5,251,474496,211
Events in quadrant C4,836,221458,515
Events in quadrant D6,403,298443,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139772
B0198762
C0192072
D0233482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64981171.800554%
B64981902.923977%
C64983515.401662%
D64983555.463219%

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 7653 6498 1 1 0.01% 0.02%
B 7653 6498 2 2 0.03% 0.03%
C 7653 6498 95 95 1.24% 1.46%
D 7652 6497 269 269 3.52% 4.14%

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 13 254 11041 56.39 905 892 180.0
A 3 137 8494 42.24 905 892 180.0
A 0 226 7671 37.67 905 892 180.0
B 6 159 1741225 10352.39 888 869 168.1
B 12 111 20586 117.29 888 869 168.1
B 11 111 18577 105.33 888 869 168.1
C 3 233 1000321 5148.02 834 843 194.1
C 0 10 424198 2180.58 834 843 194.1
C 14 238 136020 696.26 834 843 194.1
D 8 195 2850778 13210.88 845 829 215.7
D 12 227 181233 836.26 845 829 215.7
D 2 250 56499 258.06 845 829 215.7

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