ASTROSAT CZTI

Data Quality Report

Orbit 38615

Creation date: 2024-06-27T21:54:08.614564
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/AS1A12_052T04_9000005388_38615cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38615cztM0_level2_quad_clean.evt
Size (bytes)689,973,120160,692,480
Size658.0 MB 153.2 MB
Events in quadrant A5,072,6571,094,056
Events in quadrant B5,581,9481,102,215
Events in quadrant C5,369,9551,050,952
Events in quadrant D8,762,477943,729

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210333
B0231432
C0222352
D0328112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9730260.267215%
B97301711.757451%
C97301101.130524%
D97305185.323741%

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 11043 9731 11 11 0.10% 0.11%
B 11043 9731 89 89 0.81% 0.91%
C 11043 9731 86 86 0.78% 0.88%
D 11043 9731 586 586 5.31% 6.02%

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 10 83 663168 2952.51 1099 1078 224.2
A 15 174 54684 239.05 1099 1078 224.2
A 0 52 31713 136.61 1099 1078 224.2
B 0 183 569637 2730.64 1092 1063 208.2
B 5 172 140149 667.97 1092 1063 208.2
B 4 171 128614 612.58 1092 1063 208.2
C 14 254 573502 2310.34 1067 1077 247.8
C 15 214 389373 1567.18 1067 1077 247.8
C 15 208 112288 448.85 1067 1077 247.8
D 1 47 1520852 5893.31 1052 1020 257.9
D 1 20 1310746 5078.6 1052 1020 257.9
D 2 16 716554 2774.56 1052 1020 257.9

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