ASTROSAT CZTI

Data Quality Report

Orbit 38637

Creation date: 2024-06-27T21:54:27.378424
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/AS1A12_061T03_9000005390_38637cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38637cztM0_level2_quad_clean.evt
Size (bytes)340,669,44091,782,720
Size324.9 MB 87.5 MB
Events in quadrant A2,817,177623,286
Events in quadrant B2,901,944638,506
Events in quadrant C3,137,476609,748
Events in quadrant D3,366,454558,638

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111483
B0116072
C0122852
D0131472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4978220.441945%
B4978430.863801%
C4978931.868220%
D49781362.732021%

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 7099 4979 23 23 0.32% 0.46%
B 7099 4979 19 19 0.27% 0.38%
C 7099 4979 97 97 1.37% 1.95%
D 7099 4979 127 127 1.79% 2.55%

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 391955 3231.15 602 591 121.1
A 13 248 48591 396.29 602 591 121.1
A 0 247 23899 192.43 602 591 121.1
B 4 171 404826 3524.8 596 580 114.7
B 0 155 72920 630.77 596 580 114.7
B 5 184 18342 154.87 596 580 114.7
C 14 254 452600 3321.63 588 594 136.1
C 15 214 202835 1486.2 588 594 136.1
C 15 159 88329 644.73 588 594 136.1
D 5 222 290447 2026.88 591 577 143.0
D 12 233 166242 1158.39 591 577 143.0
D 2 249 156339 1089.15 591 577 143.0

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