ASTROSAT CZTI

Data Quality Report

Orbit 24457

Creation date: 2024-06-27T19:06:11.376649
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/AS1T03_183T01_9000003606_24457cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24457cztM0_level2_quad_clean.evt
Size (bytes)1,344,219,840263,710,080
Size1.3 GB 251.5 MB
Events in quadrant A7,611,3171,756,484
Events in quadrant B8,179,0181,779,240
Events in quadrant C9,836,5761,682,759
Events in quadrant D13,953,0221,614,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341063
B0352833
C0401415
D0531323

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167351911.141321%
B167353712.216911%
C167348985.366320%
D1673413678.168997%

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 17820 16738 0 0 0.00% 0.00%
B 17820 16738 100 100 0.56% 0.60%
C 17819 16737 404 404 2.27% 2.41%
D 17819 16736 1028 1028 5.77% 6.14%

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 4 2 30785 72.59 1967 1920 397.6
A 13 254 24955 57.93 1967 1920 397.6
A 3 137 18251 41.07 1967 1920 397.6
B 5 172 344108 918.44 1957 1905 372.6
B 15 33 61518 159.99 1957 1905 372.6
B 12 111 45939 118.18 1957 1905 372.6
C 2 16 2105546 4853.94 1868 1875 433.4
C 14 238 297452 682.0 1868 1875 433.4
C 3 233 99149 224.45 1868 1875 433.4
D 12 218 2888806 6389.39 1866 1807 451.8
D 7 238 2508108 5546.84 1866 1807 451.8
D 1 52 910260 2010.55 1866 1807 451.8

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