ASTROSAT CZTI

Data Quality Report

Orbit 18980

Creation date: 2024-06-27T17:57:28.280395
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/AS1A05_166T04_9000002826_18980cztM0_level2.evt modeM0/AS1A05_166T04_9000002826_18980cztM0_level2_quad_clean.evt
Size (bytes)688,193,28082,267,200
Size656.3 MB 78.5 MB
Events in quadrant A3,672,579501,859
Events in quadrant B4,267,156508,969
Events in quadrant C3,845,089496,427
Events in quadrant D8,554,566466,511

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156952
B0172762
C0161222
D0306002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74282533.406031%
B74293354.509355%
C74292913.917082%
D7429116815.722170%

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 7543 7430 0 0 0.00% 0.00%
B 7544 7431 53 53 0.70% 0.71%
C 7544 7431 13 13 0.17% 0.17%
D 7544 7431 718 718 9.52% 9.66%

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 5 98 61098 314.57 934 912 191.3
A 8 205 11017 52.81 934 912 191.3
A 0 226 8289 38.56 934 912 191.3
B 3 112 382189 2107.93 923 897 180.9
B 7 220 167228 919.54 923 897 180.9
B 0 197 28773 154.11 923 897 180.9
C 0 207 211410 995.21 895 903 211.5
C 14 238 136389 640.53 895 903 211.5
C 3 233 8793 37.3 895 903 211.5
D 7 238 3215781 15032.16 874 849 213.9
D 12 218 1042438 4870.19 874 849 213.9
D 9 68 434073 2025.64 874 849 213.9

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