ASTROSAT CZTI

Data Quality Report

Orbit 38272

Creation date: 2024-06-27T21:50:35.232917
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/AS1A07_145T01_9000005370_38272cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38272cztM0_level2_quad_clean.evt
Size (bytes)359,449,92092,378,880
Size342.8 MB 88.1 MB
Events in quadrant A2,642,540625,904
Events in quadrant B2,546,177639,811
Events in quadrant C2,654,986614,838
Events in quadrant D5,071,293564,214

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108152
B0107611
C0107701
D0188311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A502650.099483%
B5026551.094310%
C5026370.736172%
D5026891.770792%

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 6968 5027 3 3 0.04% 0.06%
B 6968 5027 38 38 0.55% 0.76%
C 6968 5027 35 35 0.50% 0.70%
D 6968 5027 67 67 0.96% 1.33%

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 325766 2760.81 584 573 117.8
A 13 6 32667 272.47 584 573 117.8
A 12 189 27431 228.02 584 573 117.8
B 5 184 116532 1048.49 584 569 110.6
B 5 172 59058 528.83 584 569 110.6
B 15 85 31224 277.17 584 569 110.6
C 15 214 206121 1541.68 578 583 133.3
C 2 16 98249 732.56 578 583 133.3
C 0 10 29753 218.79 578 583 133.3
D 10 203 2344767 16707.02 573 558 140.3
D 2 250 134441 954.17 573 558 140.3
D 12 235 116295 824.85 573 558 140.3

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