ASTROSAT CZTI

Data Quality Report

Orbit 27460

Creation date: 2024-06-27T19:40:18.074336
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/AS1T03_249T01_9000003934_27460cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27460cztM0_level2_quad_clean.evt
Size (bytes)443,828,16093,049,920
Size423.3 MB 88.7 MB
Events in quadrant A3,238,138606,683
Events in quadrant B3,445,034613,485
Events in quadrant C3,209,833583,688
Events in quadrant D3,121,507575,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132090
B0138530
C0131140
D0131990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6277981.561255%
B62781462.325581%
C62781141.815865%
D6278610.971647%

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 7432 6278 1 1 0.01% 0.02%
B 7433 6278 16 16 0.22% 0.25%
C 7433 6279 0 0 0.00% 0.00%
D 7433 6279 4 4 0.05% 0.06%

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 6 16 43949 260.29 828 811 165.7
A 13 254 9788 54.17 828 811 165.7
A 3 137 7456 40.09 828 811 165.7
B 3 64 235667 1513.33 815 796 155.2
B 12 111 18765 115.78 815 796 155.2
B 11 111 16618 101.95 815 796 155.2
C 14 238 127195 688.94 788 794 183.5
C 2 16 7892 38.69 788 794 183.5
C 10 22 6372 30.4 788 794 183.5
D 2 250 75684 396.41 800 779 189.0
D 2 234 25889 132.89 800 779 189.0
D 1 52 9735 47.4 800 779 189.0

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