ASTROSAT CZTI

Data Quality Report

Orbit 04958

Creation date: 2024-06-27T14:49:21.156629
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/AS1G05_157T01_9000000626_04958cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04958cztM0_level2_quad_clean.evt
Size (bytes)421,588,80068,376,960
Size402.1 MB 65.2 MB
Events in quadrant A2,712,910422,829
Events in quadrant B3,026,976421,956
Events in quadrant C2,549,945426,290
Events in quadrant D4,076,082386,500

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122791
B0129901
C0120191
D0164221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5906430.728073%
B59061011.710125%
C5906180.304775%
D59064317.297663%

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 6971 5906 4 4 0.06% 0.07%
B 6971 5907 46 46 0.66% 0.78%
C 6971 5908 0 0 0.00% 0.00%
D 6971 5906 337 337 4.83% 5.71%

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 0 50 55032 388.03 674 658 140.1
A 8 15 24423 169.6 674 658 140.1
A 15 174 16229 111.12 674 658 140.1
B 10 16 181647 1377.54 678 661 131.4
B 15 204 97780 739.2 678 661 131.4
B 5 6 32268 240.57 678 661 131.4
C 13 61 5402 31.23 652 654 152.0
C 12 4 3564 19.14 652 654 152.0
C 9 54 1929 8.39 652 654 152.0
D 2 33 1030094 6556.78 630 608 157.0
D 13 235 171652 1089.38 630 608 157.0
D 2 136 137700 873.14 630 608 157.0

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