ASTROSAT CZTI

Data Quality Report

Orbit 58448

Creation date: 2026-07-17T22:14:58.405858
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_58448cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58448cztM0_level2_quad_clean.evt
Size (bytes)1,201,469,760264,427,200
Size1.1 GB 252.2 MB
Events in quadrant A8,986,2001,741,904
Events in quadrant B11,011,8961,823,646
Events in quadrant C10,557,0771,635,120
Events in quadrant D12,472,8361,518,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402292
B0456012
C0450592
D0496662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186793251.739922%
B186798234.406017%
C186795803.105091%
D186798964.796831%

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 19584 18680 67 67 0.34% 0.36%
B 19584 18680 371 371 1.89% 1.99%
C 19584 18681 414 414 2.11% 2.22%
D 19584 18680 752 752 3.84% 4.03%

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 80 245402 473.94 2072 2014 513.5
A 3 14 159215 306.11 2072 2014 513.5
A 10 248 122831 235.26 2072 2014 513.5
B 5 172 1063941 2446.77 2030 1953 434.0
B 8 128 405634 930.06 2030 1953 434.0
B 4 201 313354 717.45 2030 1953 434.0
C 5 10 1042213 1898.81 1994 1977 547.8
C 15 217 723110 1316.33 1994 1977 547.8
C 14 245 348549 632.62 1994 1977 547.8
D 8 240 2559821 4551.71 1980 1892 562.0
D 2 249 399857 708.16 1980 1892 562.0
D 3 12 281514 497.57 1980 1892 562.0

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