ASTROSAT CZTI

Data Quality Report

Orbit 14168

Creation date: 2024-06-27T16:51:34.410997
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/AS1G08_024T02_9000002094_14168cztM0_level2.evt modeM0/AS1G08_024T02_9000002094_14168cztM0_level2_quad_clean.evt
Size (bytes)503,182,08073,851,840
Size479.9 MB 70.4 MB
Events in quadrant A3,287,146442,271
Events in quadrant B3,760,195446,549
Events in quadrant C3,313,797461,428
Events in quadrant D4,446,594442,344

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136173
B0151232
C0135422
D0178912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354981.542336%
B63541822.864337%
C6354590.928549%
D63541482.329241%

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 7520 6356 4 4 0.05% 0.06%
B 7520 6356 36 36 0.48% 0.57%
C 7520 6356 0 0 0.00% 0.00%
D 7520 6356 58 58 0.77% 0.91%

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 9 143 23860 136.49 843 829 168.7
A 12 189 22694 129.58 843 829 168.7
A 0 226 7384 38.84 843 829 168.7
B 0 85 308884 1955.47 830 810 157.5
B 10 244 199801 1263.07 830 810 157.5
B 12 111 18640 113.17 830 810 157.5
C 3 233 124784 661.47 816 825 187.4
C 10 22 6407 29.79 816 825 187.4
C 13 61 5816 26.63 816 825 187.4
D 1 52 780582 4068.75 812 795 191.7
D 8 195 562479 2930.74 812 795 191.7
D 2 234 20377 102.17 812 795 191.7

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