ASTROSAT CZTI

Data Quality Report

Orbit 17196

Creation date: 2024-06-27T17:33:27.070516
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/AS1A05_185T04_9000002548_17196cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17196cztM0_level2_quad_clean.evt
Size (bytes)513,809,28089,274,240
Size490.0 MB 85.1 MB
Events in quadrant A2,987,024594,910
Events in quadrant B3,209,472603,404
Events in quadrant C4,233,836558,917
Events in quadrant D4,716,079519,391

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127362
B0133702
C0166702
D0181742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6110230.376432%
B6110350.572831%
C61101822.978723%
D61095649.232280%

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 7465 6111 0 0 0.00% 0.00%
B 7465 6111 1 1 0.01% 0.02%
C 7465 6111 0 0 0.00% 0.00%
D 7464 6110 505 505 6.77% 8.27%

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 12 189 7631 44.41 774 759 154.7
A 4 2 7065 40.75 774 759 154.7
A 0 226 6899 39.68 774 759 154.7
B 15 35 60922 412.05 777 757 146.0
B 0 219 33987 227.58 777 757 146.0
B 0 189 23561 156.18 777 757 146.0
C 3 233 1232499 7212.59 739 745 170.8
C 14 238 114469 665.92 739 745 170.8
C 13 61 5196 26.06 739 745 170.8
D 5 222 670310 3883.64 719 698 172.4
D 11 176 617992 3580.21 719 698 172.4
D 7 38 365998 2118.68 719 698 172.4

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