ASTROSAT CZTI

Data Quality Report

Orbit 28574

Creation date: 2024-06-27T19:53:31.495220
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/AS1A10_110T01_9000004104_28574cztM0_level2.evt modeM0/AS1A10_110T01_9000004104_28574cztM0_level2_quad_clean.evt
Size (bytes)526,973,76072,610,560
Size502.6 MB 69.2 MB
Events in quadrant A3,446,452452,927
Events in quadrant B3,491,244458,020
Events in quadrant C3,445,361442,543
Events in quadrant D5,167,462423,608

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141741
B0141981
C0141511
D0195401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6029911.509371%
B60301352.238806%
C60301712.835821%
D60304507.462687%

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 7314 6029 0 0 0.00% 0.00%
B 7315 6030 6 6 0.08% 0.10%
C 7315 6030 9 9 0.12% 0.15%
D 7315 6030 338 338 4.62% 5.61%

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 15 174 167563 986.62 848 834 169.0
A 13 254 9733 52.66 848 834 169.0
A 3 137 7746 40.9 848 834 169.0
B 15 33 117310 742.61 838 819 156.9
B 4 171 40534 253.18 838 819 156.9
B 12 111 18221 110.93 838 819 156.9
C 14 238 135267 709.39 822 829 189.5
C 0 207 60569 315.23 822 829 189.5
C 7 247 28080 143.79 822 829 189.5
D 1 52 1537634 7959.62 813 794 193.1
D 8 195 269956 1394.05 813 794 193.1
D 2 250 177616 915.8 813 794 193.1

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