ASTROSAT CZTI

Data Quality Report

Orbit 25654

Creation date: 2024-06-27T19:20:00.181143
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_013T02_9000003734_25654cztM0_level2.evt modeM0/AS1A09_013T02_9000003734_25654cztM0_level2_quad_clean.evt
Size (bytes)589,573,44086,950,080
Size562.3 MB 82.9 MB
Events in quadrant A3,675,450541,179
Events in quadrant B3,571,794547,054
Events in quadrant C3,589,725522,588
Events in quadrant D6,506,017496,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155910
B0155100
C0155680
D0243860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75422773.672766%
B75433044.030227%
C75432903.844624%
D754391112.077423%

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 7587 7543 0 0 0.00% 0.00%
B 7588 7543 0 0 0.00% 0.00%
C 7588 7544 0 0 0.00% 0.00%
D 7588 7544 640 640 8.43% 8.48%

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 8 192 183622 998.27 905 882 183.1
A 13 254 10840 54.4 905 882 183.1
A 3 137 8718 42.81 905 882 183.1
B 12 111 21892 121.03 902 877 173.6
B 11 111 19929 109.73 902 877 173.6
B 0 245 18951 104.09 902 877 173.6
C 14 238 139006 676.68 867 869 204.1
C 3 233 67964 328.67 867 869 204.1
C 13 61 6096 25.61 867 869 204.1
D 1 52 2360838 10766.41 846 822 219.2
D 8 195 555295 2529.51 846 822 219.2
D 2 244 170198 772.69 846 822 219.2

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