ASTROSAT CZTI

Data Quality Report

Orbit 00843

Creation date: 2024-06-27T14:03:42.809598
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/AS1P01_165T02_9000000116_00843cztM0_level2.evt modeM0/AS1P01_165T02_9000000116_00843cztM0_level2_quad_clean.evt
Size (bytes)1,359,025,92095,509,440
Size1.3 GB 91.1 MB
Events in quadrant A10,325,539587,572
Events in quadrant B10,891,584582,268
Events in quadrant C10,158,116574,697
Events in quadrant D9,233,396570,367

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365710
B0382630
C0360810
D0334010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8311210.252677%
B8311470.565516%
C8312420.505294%
D8312110.132339%

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 8936 8313 569 569 6.37% 6.84%
B 8936 8313 744 744 8.33% 8.95%
C 8937 8314 538 538 6.02% 6.47%
D 8937 8314 358 358 4.01% 4.31%

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 15 171 141689 215.62 2645 2670 644.7
A 15 127 38631 55.78 2645 2670 644.7
A 11 79 9947 11.29 2645 2670 644.7
B 0 220 62446 90.65 2790 2810 657.8
B 5 191 54847 79.1 2790 2810 657.8
B 8 38 50173 72.0 2790 2810 657.8
C 8 208 97360 134.29 2509 2597 705.7
C 5 234 81347 111.6 2509 2597 705.7
C 3 111 43018 57.28 2509 2597 705.7
D 13 169 76136 98.55 2396 2478 747.4
D 1 4 58888 75.48 2396 2478 747.4
D 10 85 43762 55.24 2396 2478 747.4

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