ASTROSAT CZTI

Data Quality Report

Orbit 53703

Creation date: 2025-09-02T16:16:10.514039
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/AS1A14_022T05_9000006504_53703cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53703cztM0_level2_quad_clean.evt
Size (bytes)2,771,838,720226,051,200
Size2.6 GB 215.6 MB
Events in quadrant A43,515,492622,572
Events in quadrant B11,583,9342,009,961
Events in quadrant C31,727,7001,176,846
Events in quadrant D14,224,6911,641,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043616
B043614
C043610
D043616

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0447
B0444
C0447
D0445

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015545412582
B0508212444
C01146656701
D0592172852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197261412671.611072%
B204336963.406255%
C20072751737.450179%
D204369984.883539%

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 25874 20278 14242 14242 55.04% 70.23%
B 25873 20884 441 441 1.70% 2.11%
C 25873 20622 7520 7520 29.07% 36.47%
D 25873 20897 952 952 3.68% 4.56%

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 3 63 34081261 93538.63 1478 1447 364.3
A 3 78 1973154 5411.73 1478 1447 364.3
A 14 254 858917 2353.49 1478 1447 364.3
B 5 185 1836942 3934.81 2203 2128 466.3
B 10 254 239786 509.66 2203 2128 466.3
B 7 0 214930 456.36 2203 2128 466.3
C 1 241 10768673 22833.17 1717 1705 471.5
C 15 224 9890724 20971.33 1717 1705 471.5
C 13 3 1017567 2154.31 1717 1705 471.5
D 1 241 1572903 2573.68 2130 2043 610.4
D 7 70 994540 1626.1 2130 2043 610.4
D 2 120 497057 811.03 2130 2043 610.4

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