ASTROSAT CZTI

Data Quality Report

Orbit 12525

Creation date: 2024-06-27T16:28:39.318706
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/AS1A04_230T01_9000001854_12525cztM0_level2.evt modeM0/AS1A04_230T01_9000001854_12525cztM0_level2_quad_clean.evt
Size (bytes)488,197,44097,752,960
Size465.6 MB 93.2 MB
Events in quadrant A3,772,382622,397
Events in quadrant B3,550,358632,348
Events in quadrant C3,305,385618,592
Events in quadrant D3,668,604586,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157812
B0153491
C0148341
D0161461

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71802042.841226%
B71802223.091922%
C71801211.685237%
D71801982.757660%

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 7196 7182 0 0 0.00% 0.00%
B 7196 7182 20 20 0.28% 0.28%
C 7196 7182 0 0 0.00% 0.00%
D 7196 7182 47 47 0.65% 0.65%

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 1 162 138837 784.75 859 840 175.8
A 1 178 82915 466.74 859 840 175.8
A 12 189 77390 435.32 859 840 175.8
B 4 239 148698 894.39 856 835 165.3
B 3 64 32860 193.71 856 835 165.3
B 12 111 19326 111.85 856 835 165.3
C 3 233 37805 189.28 834 836 195.3
C 8 128 9049 42.05 834 836 195.3
C 13 61 6033 26.61 834 836 195.3
D 1 52 336962 1678.57 826 801 200.3
D 13 249 65425 322.69 826 801 200.3
D 2 14 54865 269.96 826 801 200.3

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