ASTROSAT CZTI

Data Quality Report

Orbit 28026

Creation date: 2024-06-27T19:47:13.319314
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/AS1A10_045T02_9000004048_28026cztM0_level2.evt modeM0/AS1A10_045T02_9000004048_28026cztM0_level2_quad_clean.evt
Size (bytes)537,886,080100,480,320
Size513.0 MB 95.8 MB
Events in quadrant A3,444,421665,383
Events in quadrant B3,515,906670,062
Events in quadrant C3,571,235626,982
Events in quadrant D5,300,908610,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142610
B0145680
C0148290
D0206900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67551181.746854%
B67561482.190645%
C67551712.531458%
D67552503.700962%

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 7625 6756 0 0 0.00% 0.00%
B 7626 6756 6 6 0.08% 0.09%
C 7625 6756 1 1 0.01% 0.01%
D 7625 6756 146 146 1.91% 2.16%

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 0 13 18579 100.91 882 866 175.5
A 8 34 17259 93.39 882 866 175.5
A 13 254 10642 55.69 882 866 175.5
B 10 245 53867 321.22 872 853 165.0
B 0 190 22528 131.33 872 853 165.0
B 12 111 20569 119.46 872 853 165.0
C 3 233 182781 933.89 833 839 194.8
C 14 238 132975 678.24 833 839 194.8
C 13 61 5668 24.79 833 839 194.8
D 8 195 1211821 6138.61 837 817 197.3
D 1 52 542259 2744.58 837 817 197.3
D 7 80 336220 1700.16 837 817 197.3

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