ASTROSAT CZTI

Data Quality Report

Orbit 45982

Creation date: 2024-06-27T23:18:27.230142
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/AS1A13_017T01_9000006148_45982cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45982cztM0_level2_quad_clean.evt
Size (bytes)598,118,400112,893,120
Size570.4 MB 107.7 MB
Events in quadrant A6,936,217740,905
Events in quadrant B7,554,746739,790
Events in quadrant C3,065,281778,114
Events in quadrant D4,062,744690,453

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0251452
B0272262
C0140883
D0167912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67344626.860707%
B673487012.919513%
C6733440.653498%
D67332012.985296%

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 7944 6734 289 289 3.64% 4.29%
B 7944 6734 598 598 7.53% 8.88%
C 7943 6734 27 27 0.34% 0.40%
D 7943 6734 201 201 2.53% 2.98%

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 10 83 2972127 19259.37 746 730 154.3
A 15 223 1078887 6988.17 746 730 154.3
A 13 254 9427 56.37 746 730 154.3
B 3 112 4616112 32342.93 738 716 142.7
B 5 255 24069 163.65 738 716 142.7
B 12 111 17970 120.91 738 716 142.7
C 14 254 124823 713.79 751 756 173.8
C 11 16 6424 32.61 751 756 173.8
C 3 233 5198 25.56 751 756 173.8
D 1 52 799360 4391.93 732 711 181.8
D 12 2 236060 1294.23 732 711 181.8
D 2 249 91915 501.55 732 711 181.8

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