ASTROSAT CZTI

Data Quality Report

Orbit 33330

Creation date: 2024-06-27T20:47:37.796493
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/AS1T04_071T01_9000004782_33330cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33330cztM0_level2_quad_clean.evt
Size (bytes)1,525,743,360168,958,080
Size1.4 GB 161.1 MB
Events in quadrant A7,496,5521,071,936
Events in quadrant B11,713,321980,904
Events in quadrant C11,378,8621,017,827
Events in quadrant D14,569,302969,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323685
B0450414
C0436944
D0542124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490
B0490
C0490
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15589240.153955%
B15589167710.757585%
C155895163.310026%
D155899406.029893%

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 19738 15592 4 4 0.02% 0.03%
B 19738 15592 1036 1036 5.25% 6.64%
C 19738 15592 431 431 2.18% 2.76%
D 19738 15592 780 780 3.95% 5.00%

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 0 254 324425 877.34 1845 1804 367.7
A 13 254 22203 55.47 1845 1804 367.7
A 13 6 21802 54.38 1845 1804 367.7
B 5 172 2136342 6360.58 1756 1710 335.6
B 0 219 1878060 5590.98 1756 1710 335.6
B 5 200 556060 1651.8 1756 1710 335.6
C 10 49 2637623 6481.16 1763 1779 406.7
C 15 214 721018 1768.5 1763 1779 406.7
C 0 10 408688 1000.53 1763 1779 406.7
D 8 195 4436485 9430.52 1732 1697 470.3
D 12 6 944177 2004.17 1732 1697 470.3
D 2 250 618760 1312.18 1732 1697 470.3

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