ASTROSAT CZTI

Data Quality Report

Orbit 07981

Creation date: 2024-06-27T15:26:21.169273
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/AS1G06_077T01_9000001090_07981cztM0_level2.evt modeM0/AS1G06_077T01_9000001090_07981cztM0_level2_quad_clean.evt
Size (bytes)563,227,20087,088,320
Size537.1 MB 83.1 MB
Events in quadrant A4,043,310516,819
Events in quadrant B3,842,414536,972
Events in quadrant C3,850,554535,610
Events in quadrant D4,784,678498,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01717610
B0166432
C0168052
D0196844

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78893514.449233%
B78923414.320831%
C78922573.256462%
D78915206.589786%

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 8267 7894 6 6 0.07% 0.08%
B 8267 7894 2 2 0.02% 0.03%
C 8267 7894 0 0 0.00% 0.00%
D 8267 7894 206 206 2.49% 2.61%

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 0 128 219766 1099.59 963 941 199.0
A 15 239 72003 357.09 963 941 199.0
A 13 251 24018 115.96 963 941 199.0
B 0 168 31048 157.66 966 938 191.0
B 11 51 27233 137.69 966 938 191.0
B 12 111 21959 110.07 966 938 191.0
C 1 16 181122 813.74 940 941 221.4
C 13 61 7016 27.44 940 941 221.4
C 8 222 3485 11.49 940 941 221.4
D 1 52 1134286 4965.88 928 898 228.2
D 5 97 79983 346.51 928 898 228.2
D 13 169 56080 241.78 928 898 228.2

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