ASTROSAT CZTI

Data Quality Report

Orbit 52297

Creation date: 2025-07-22T13:40:30.664341
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/AS1C09_011T05_9000006474_52297cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52297cztM0_level2_quad_clean.evt
Size (bytes)949,898,88079,776,000
Size905.9 MB 76.1 MB
Events in quadrant A5,774,027586,484
Events in quadrant B4,846,844666,049
Events in quadrant C12,940,060292,002
Events in quadrant D11,070,332391,592

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219551
B0192031
C0431751
D0376086

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A687083512.154294%
B68704065.909753%
C6870406759.199418%
D6869276640.267870%

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 7230 6871 766 766 10.59% 11.15%
B 7230 6871 225 225 3.11% 3.27%
C 7229 6870 3575 3575 49.45% 52.04%
D 7228 6869 2292 2292 31.71% 33.37%

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 4 249 2013994 11879.85 679 662 169.5
A 6 162 280772 1652.81 679 662 169.5
A 3 95 200922 1181.65 679 662 169.5
B 4 171 501215 3424.19 694 671 146.2
B 0 216 433081 2958.09 694 671 146.2
B 8 128 271159 1850.39 694 671 146.2
C 15 224 2661114 19728.26 490 485 134.9
C 0 161 2567598 19034.85 490 485 134.9
C 15 178 2511217 18616.79 490 485 134.9
D 15 93 7400812 43602.74 592 564 169.7
D 7 96 320883 1887.34 592 564 169.7
D 8 176 232954 1369.26 592 564 169.7

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