ASTROSAT CZTI

Data Quality Report

Orbit 01317

Creation date: 2024-06-27T14:10:53.142007
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/AS1G04_002T02_9000000230_01317cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01317cztM0_level2_quad_clean.evt
Size (bytes)1,233,829,440101,891,520
Size1.1 GB 97.2 MB
Events in quadrant A13,322,134613,582
Events in quadrant B8,423,614696,554
Events in quadrant C7,598,972677,597
Events in quadrant D7,589,566640,670

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0443412
B0296541
C0272441
D0272701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6544137220.965770%
B6544250.382029%
C654420.030562%
D65442453.743888%

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 7819 6544 3091 3091 39.53% 47.23%
B 7819 6545 350 350 4.48% 5.35%
C 7819 6545 174 174 2.23% 2.66%
D 7819 6545 516 516 6.60% 7.88%

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 4 32 6237980 14227.49 1842 1859 438.3
A 12 243 9054 16.42 1842 1859 438.3
A 14 234 8482 15.11 1842 1859 438.3
B 0 182 244102 504.71 2058 2069 479.6
B 8 4 214696 443.39 2058 2069 479.6
B 6 53 92449 188.47 2058 2069 479.6
C 15 241 326814 634.91 1850 1910 511.7
C 3 111 20175 35.69 1850 1910 511.7
C 3 79 15800 27.14 1850 1910 511.7
D 10 84 710022 1335.31 1722 1787 530.4
D 1 83 285808 535.49 1722 1787 530.4
D 9 66 39343 70.81 1722 1787 530.4

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