ASTROSAT CZTI

Data Quality Report

Orbit 48186

Creation date: 2024-08-26T10:15:53.569958
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/AS1A13_065T05_9000006412_48186cztM0_level2.fits modeM0/AS1A13_065T05_9000006412_48186cztM0_level2_quad_clean.evt
Size (bytes)543,507,84087,675,840
Size518.3 MB 83.6 MB
Events in quadrant A7,548,353766,092
Events in quadrant B1,126,12145,932
Events in quadrant C3,249,258754,090
Events in quadrant D7,684,425631,383

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268452
B069302
C0139612
D0272702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64994637.124173%
B64996499100.000000%
C6499971.492537%
D6499151423.295892%

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 7659 6499 89 89 1.16% 1.37%
B 7658 6498 0 0 0.00% 0.00%
C 7659 6500 17 17 0.22% 0.26%
D 7659 6499 1203 1203 15.71% 18.51%

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 10 83 4468874 27195.01 785 769 164.3
A 13 248 35979 214.3 785 769 164.3
A 13 254 11841 67.39 785 769 164.3
B 2 177 897569 78143.22 48 47 11.5
B 0 200 15096 1310.25 48 47 11.5
B 4 21 7464 645.76 48 47 11.5
C 14 254 129897 699.96 781 786 184.5
C 12 2 58917 315.15 781 786 184.5
C 0 207 6682 31.96 781 786 184.5
D 2 165 4024205 22160.15 714 691 181.6
D 5 222 259684 1426.45 714 691 181.6
D 12 7 223912 1229.43 714 691 181.6

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