ASTROSAT CZTI

Data Quality Report

Orbit 09998

Creation date: 2024-06-27T15:53:25.616241
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/AS1G07_074T01_9000001426_09998cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09998cztM0_level2_quad_clean.evt
Size (bytes)563,618,88080,881,920
Size537.5 MB 77.1 MB
Events in quadrant A3,560,377484,235
Events in quadrant B3,803,419489,726
Events in quadrant C3,423,462490,397
Events in quadrant D5,740,544430,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01639513
B0170029
C01616311
D02263428

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7972510.639739%
B7974891.116127%
C7973300.376270%
D79727689.633718%

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 8648 7979 13 13 0.15% 0.16%
B 8648 7978 15 15 0.17% 0.19%
C 8648 7978 0 0 0.00% 0.00%
D 8648 7976 734 734 8.49% 9.20%

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 15 174 54441 293.6 895 876 182.4
A 8 15 40017 214.54 895 876 182.4
A 4 2 12103 61.54 895 876 182.4
B 4 239 124276 708.91 905 881 174.1
B 0 214 61082 345.86 905 881 174.1
B 4 81 24369 134.94 905 881 174.1
C 13 61 6536 27.75 876 881 203.7
C 5 32 3583 13.26 876 881 203.7
C 8 222 3576 13.23 876 881 203.7
D 1 52 2077753 9802.82 815 794 211.9
D 8 195 338062 1591.84 815 794 211.9
D 2 16 98402 460.69 815 794 211.9

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