ASTROSAT CZTI

Data Quality Report

Orbit 26985

Creation date: 2024-06-27T19:35:16.501598
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/AS1A09_145T01_9000003900_26985cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_26985cztM0_level2_quad_clean.evt
Size (bytes)773,795,52099,293,760
Size737.9 MB 94.7 MB
Events in quadrant A9,160,071559,814
Events in quadrant B3,408,763695,922
Events in quadrant C3,399,209667,016
Events in quadrant D6,998,587600,800

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318800
B0143190
C0143210
D0254260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6924221531.990179%
B69241251.805315%
C69251482.137184%
D692589912.981949%

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 7229 6924 1742 1742 24.10% 25.16%
B 7229 6925 1 1 0.01% 0.01%
C 7230 6926 0 0 0.00% 0.00%
D 7230 6925 847 847 11.72% 12.23%

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 14 235 6148124 39158.74 769 754 157.0
A 5 168 34729 216.42 769 754 157.0
A 8 192 12952 77.7 769 754 157.0
B 12 111 20422 117.29 867 846 166.9
B 11 111 18071 103.21 867 846 166.9
B 14 111 16213 92.07 867 846 166.9
C 14 238 135826 679.33 836 843 198.7
C 13 61 5661 24.25 836 843 198.7
C 15 208 5630 24.09 836 843 198.7
D 1 52 3791836 19454.48 814 793 194.9
D 2 250 113493 578.34 814 793 194.9
D 2 234 27358 136.32 814 793 194.9

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