ASTROSAT CZTI

Data Quality Report

Orbit 04887

Creation date: 2024-06-27T14:48:27.154192
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/AS1G05_237T01_9000000620_04887cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04887cztM0_level2_quad_clean.evt
Size (bytes)1,075,996,800178,580,160
Size1.0 GB 170.3 MB
Events in quadrant A7,536,7521,097,512
Events in quadrant B7,545,3511,105,602
Events in quadrant C6,875,3841,097,726
Events in quadrant D9,572,3001,029,994

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03142

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03317821
B03298021
C03166926
D03953436

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156221510.966586%
B15622940.601716%
C15619350.224086%
D156178835.654095%

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 25664 15632 103 103 0.40% 0.66%
B 25664 15633 4 4 0.02% 0.03%
C 25664 15634 0 0 0.00% 0.00%
D 25664 15629 643 643 2.51% 4.11%

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 50 334260 901.65 1803 1768 368.8
A 0 31 214259 576.23 1803 1768 368.8
A 13 14 24040 60.4 1803 1768 368.8
B 15 204 281327 803.41 1822 1782 347.9
B 0 219 97895 276.23 1822 1782 347.9
B 15 54 71805 201.25 1822 1782 347.9
C 12 4 18597 42.01 1742 1759 400.8
C 14 67 15338 33.88 1742 1759 400.8
C 13 61 14204 31.05 1742 1759 400.8
D 1 52 1154332 2772.38 1690 1642 415.8
D 13 235 900046 2160.79 1690 1642 415.8
D 2 136 444246 1064.52 1690 1642 415.8

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