ASTROSAT CZTI

Data Quality Report

Orbit 36910

Creation date: 2024-06-27T21:33:07.442054
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/AS1C07_010T01_9000005246_36910cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36910cztM0_level2_quad_clean.evt
Size (bytes)330,186,24067,265,280
Size314.9 MB 64.1 MB
Events in quadrant A2,783,672563,672
Events in quadrant B812,8069,387
Events in quadrant C2,828,556555,077
Events in quadrant D3,203,518530,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116683
B054342
C0115262
D0131832

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5364200.372856%
B53645364100.000000%
C5364440.820283%
D53641142.125280%

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 8920 5366 3 3 0.03% 0.06%
B 8919 5363 0 0 0.00% 0.00%
C 8920 5366 31 31 0.35% 0.58%
D 8920 5366 111 111 1.24% 2.07%

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 230212 1782.11 640 628 128.8
A 15 223 27338 207.33 640 628 128.8
A 9 143 24416 184.65 640 628 128.8
B 12 243 744825 181482.78 11 11 4.1
B 12 144 13642 3321.36 11 11 4.1
B 5 255 2151 521.44 11 11 4.1
C 15 214 230989 1570.65 625 630 146.7
C 0 10 153609 1043.06 625 630 146.7
C 15 159 6357 39.05 625 630 146.7
D 4 239 180000 1180.98 621 606 151.9
D 2 153 134779 883.28 621 606 151.9
D 7 38 98292 643.08 621 606 151.9

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