ASTROSAT CZTI

Data Quality Report

Orbit 33985

Creation date: 2024-06-27T20:55:02.566358
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/AS1A11_046T07_9000004862_33985cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33985cztM0_level2_quad_clean.evt
Size (bytes)464,561,28072,754,560
Size443.0 MB 69.4 MB
Events in quadrant A2,832,585458,366
Events in quadrant B3,190,086467,817
Events in quadrant C3,117,219454,883
Events in quadrant D4,551,016431,966

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117673
B0130222
C0124342
D0171842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5571490.879555%
B5571561.005206%
C5571480.861605%
D55714367.826243%

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 7364 5572 41 41 0.56% 0.74%
B 7364 5572 38 38 0.52% 0.68%
C 7364 5572 37 37 0.50% 0.66%
D 7364 5572 366 366 4.97% 6.57%

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 15 169 190908 1409.82 677 665 134.9
A 10 83 16119 114.52 677 665 134.9
A 13 254 9581 66.07 677 665 134.9
B 5 172 181052 1415.45 673 657 127.4
B 4 200 117619 917.73 673 657 127.4
B 0 190 80290 624.83 673 657 127.4
C 15 214 242359 1609.77 654 661 150.1
C 0 10 190851 1266.71 654 661 150.1
C 3 233 89408 591.08 654 661 150.1
D 8 195 898888 5714.54 639 621 157.2
D 3 13 493363 3134.7 639 621 157.2
D 8 230 428028 2719.05 639 621 157.2

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