ASTROSAT CZTI

Data Quality Report

Orbit 15041

Creation date: 2024-06-27T17:02:57.287078
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/AS1T02_060T01_9000002216_15041cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15041cztM0_level2_quad_clean.evt
Size (bytes)487,823,04071,887,680
Size465.2 MB 68.6 MB
Events in quadrant A3,483,817431,359
Events in quadrant B3,527,177440,456
Events in quadrant C4,097,419425,355
Events in quadrant D3,209,961411,933

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143223
B0145162
C0165402
D0141182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67081211.803816%
B67081832.728086%
C67081001.490757%
D6708891.326774%

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 7589 6709 0 0 0.00% 0.00%
B 7589 6709 14 14 0.18% 0.21%
C 7589 6709 1 1 0.01% 0.01%
D 7589 6709 11 11 0.14% 0.16%

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 1 162 81920 469.55 854 838 172.7
A 1 178 37970 215.04 854 838 172.7
A 1 161 32794 185.06 854 838 172.7
B 10 16 169125 1024.64 850 831 164.2
B 3 64 21989 128.82 850 831 164.2
B 12 111 20444 119.41 850 831 164.2
C 3 233 875491 4538.87 823 829 192.7
C 3 232 6511 29.49 823 829 192.7
C 13 61 5838 25.99 823 829 192.7
D 10 70 61673 304.47 822 799 199.9
D 2 234 20908 100.58 822 799 199.9
D 2 152 15414 73.1 822 799 199.9

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