ASTROSAT CZTI

Data Quality Report

Orbit 20160728_G05_250T01_9000000568_level2

Creation date: 2025-11-04T12:13:32.691987
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_250T01_9000000568cztM0_level2.fits modeM0/AS1G05_250T01_9000000568cztM0_level2_quad_clean.evt
Size (bytes)1,396,278,7201,506,510,720
Size1.3 GB 1.4 GB
Events in quadrant A7,920,9568,539,798
Events in quadrant B8,185,1009,287,328
Events in quadrant C8,307,2008,851,442
Events in quadrant D7,086,8308,173,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04674380
B03333800
C03316270
D03649100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032160
B032180
C032280
D032300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02470
B02440
C02460
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1568021759211.219245%
B15742325411.614122%
C15743721411.359909%
D15707935672.270832%

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 202082 157682 0 0 0.00% 0.00%
B 202082 158664 0 0 0.00% 0.00%
C 202082 158637 0 0 0.00% 0.00%
D 202082 158330 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 7 110 6792 9.18 2062 1928 529.6
A 0 29 6612 8.85 2062 1928 529.6
A 9 19 5889 7.48 2062 1928 529.6
B 2 9 7192 11.9 2163 2058 431.5
B 14 254 5907 8.92 2163 2058 431.5
B 12 226 5876 8.85 2163 2058 431.5
C 1 81 6232 7.23 2193 2026 581.6
C 1 80 6208 7.19 2193 2026 581.6
C 12 241 5928 6.71 2193 2026 581.6
D 11 82 6031 7.71 2023 1832 544.3
D 4 160 5251 6.28 2023 1832 544.3
D 6 231 5241 6.26 2023 1832 544.3

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