ASTROSAT CZTI

Data Quality Report

Orbit 16129

Creation date: 2024-06-27T17:18:22.942986
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_094T01_9000002380_16129cztM0_level2.evt modeM0/AS1T02_094T01_9000002380_16129cztM0_level2_quad_clean.evt
Size (bytes)545,572,80098,815,680
Size520.3 MB 94.2 MB
Events in quadrant A3,845,863646,781
Events in quadrant B5,118,981628,082
Events in quadrant C3,422,481612,789
Events in quadrant D3,655,115611,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161502
B0199222
C0147512
D0156432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70831111.567133%
B70831952.753071%
C7083851.200056%
D7083460.649442%

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 7538 7084 60 60 0.80% 0.85%
B 7539 7084 72 72 0.96% 1.02%
C 7539 7084 22 22 0.29% 0.31%
D 7539 7085 36 36 0.48% 0.51%

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 446277 2614.4 847 829 170.4
A 0 253 103476 602.45 847 829 170.4
A 9 143 21578 121.78 847 829 170.4
B 5 65 1261266 7888.0 841 820 159.8
B 7 220 228168 1422.77 841 820 159.8
B 0 189 122136 759.21 841 820 159.8
C 14 238 122441 633.82 813 818 191.9
C 0 207 72281 372.42 813 818 191.9
C 3 233 24098 121.32 813 818 191.9
D 1 52 208211 1016.7 830 807 204.0
D 12 221 157888 770.02 830 807 204.0
D 15 0 59084 285.68 830 807 204.0

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