ASTROSAT CZTI

Data Quality Report

Orbit 58390

Creation date: 2026-07-14T00:28:59.437393
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_045T01_9000006590_58390cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58390cztM0_level2_quad_clean.evt
Size (bytes)1,392,278,400241,205,760
Size1.3 GB 230.0 MB
Events in quadrant A9,591,1841,646,471
Events in quadrant B18,450,1131,444,504
Events in quadrant C9,315,5411,582,700
Events in quadrant D12,803,9801,401,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411523
B0671983
C0407033
D0500173

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A178004352.443820%
B17800330618.573034%
C178013592.016741%
D1780111166.269311%

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 18909 17801 214 214 1.13% 1.20%
B 18909 17800 2378 2378 12.58% 13.36%
C 18910 17802 253 253 1.34% 1.42%
D 18910 17803 950 950 5.02% 5.34%

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 12 114 399831 815.13 1979 1926 488.2
A 13 248 354132 721.51 1979 1926 488.2
A 2 143 352415 717.99 1979 1926 488.2
B 5 172 7512819 18951.26 1859 1784 396.3
B 6 255 761471 1916.78 1859 1784 396.3
B 0 153 534992 1345.35 1859 1784 396.3
C 15 147 684599 1296.8 1920 1907 526.4
C 6 223 242440 456.9 1920 1907 526.4
C 15 148 218272 410.99 1920 1907 526.4
D 2 249 2214387 4176.9 1877 1798 529.7
D 11 129 1715865 3235.79 1877 1798 529.7
D 2 153 305625 573.56 1877 1798 529.7

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