ASTROSAT CZTI

Data Quality Report

Orbit 20160628_G05_222T01_9000000520_level2

Creation date: 2025-10-31T04:20:14.285947
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_222T01_9000000520cztM0_level2.fits modeM0/AS1G05_222T01_9000000520cztM0_level2_quad_clean.evt
Size (bytes)1,188,060,4801,182,130,560
Size1.1 GB 1.1 GB
Events in quadrant A7,123,9247,113,750
Events in quadrant B6,860,5827,076,726
Events in quadrant C6,922,5006,364,864
Events in quadrant D6,063,3086,244,581

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026740
B026780
C026780
D026810

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02838830
B02975270
C03296760
D02997370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13141827892.122236%
B13130438192.908518%
C13140191606.971028%
D13127936242.760533%

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 150465 132043 0 0 0.00% 0.00%
B 150466 131963 0 0 0.00% 0.00%
C 150465 132055 0 0 0.00% 0.00%
D 150465 131960 0 0 0.00% 0.00%

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 29 6931 10.81 1852 1717 482.3
A 7 110 6119 9.13 1852 1717 482.3
A 9 19 5425 7.69 1852 1717 482.3
B 2 9 5768 10.88 1815 1716 372.3
B 12 226 5021 8.88 1815 1716 372.3
B 14 254 4855 8.43 1815 1716 372.3
C 1 80 5112 7.07 1824 1679 485.4
C 12 241 4920 6.68 1824 1679 485.4
C 1 81 4822 6.48 1824 1679 485.4
D 11 82 5203 7.8 1730 1566 466.1
D 3 14 4656 6.63 1730 1566 466.1
D 7 5 4424 6.13 1730 1566 466.1

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