ASTROSAT CZTI

Data Quality Report

Orbit 19212

Creation date: 2024-06-27T18:00:17.662833
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_063T03_9000002840_19212cztM0_level2.evt modeM0/AS1A05_063T03_9000002840_19212cztM0_level2_quad_clean.evt
Size (bytes)584,294,400110,551,680
Size557.2 MB 105.4 MB
Events in quadrant A3,608,545700,023
Events in quadrant B3,697,364720,898
Events in quadrant C5,194,723696,605
Events in quadrant D4,667,862689,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160783
B0161982
C0209972
D0193892

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77691592.046595%
B77692022.600077%
C77692853.668426%
D77691171.505985%

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 7844 7770 0 0 0.00% 0.00%
B 7844 7770 1 1 0.01% 0.01%
C 7844 7770 2 2 0.03% 0.03%
D 7844 7770 35 35 0.45% 0.45%

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 13 254 9558 45.39 934 910 190.5
A 0 226 8042 37.43 934 910 190.5
A 3 137 7808 36.2 934 910 190.5
B 12 111 22499 118.87 936 912 181.6
B 11 111 19590 102.85 936 912 181.6
B 10 247 18315 95.83 936 912 181.6
C 3 233 1551626 7404.83 898 903 209.4
C 14 238 136095 645.55 898 903 209.4
C 13 61 6416 26.33 898 903 209.4
D 1 52 1110302 4990.39 910 881 222.3
D 11 176 51801 229.05 910 881 222.3
D 10 66 45504 200.72 910 881 222.3

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