ASTROSAT CZTI

Data Quality Report

Orbit 58290

Creation date: 2026-07-07T06:33:31.387103
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_044T03_9000006588_58290cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58290cztM0_level2_quad_clean.evt
Size (bytes)717,857,28084,905,280
Size684.6 MB 81.0 MB
Events in quadrant A4,263,386641,373
Events in quadrant B15,084,357196,027
Events in quadrant C3,024,119641,623
Events in quadrant D3,653,069601,717

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176842
B0496702
C0144662
D0156932

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70423004.260153%
B7043527474.882862%
C7043140.198779%
D7043680.965498%

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 8777 7044 261 261 2.97% 3.71%
B 8777 7042 4921 4921 56.07% 69.88%
C 8778 7045 4 4 0.05% 0.06%
D 8778 7045 50 50 0.57% 0.71%

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 0 12 665586 3656.06 739 719 181.9
A 12 114 259325 1422.06 739 719 181.9
A 3 14 191873 1051.14 739 719 181.9
B 10 128 12474037 139659.77 411 397 89.3
B 6 255 412291 4611.73 411 397 89.3
B 2 249 143653 1603.95 411 397 89.3
C 6 223 35379 170.25 738 733 203.5
C 15 204 19857 93.98 738 733 203.5
C 12 252 13738 63.91 738 733 203.5
D 2 120 241908 1149.37 731 699 209.9
D 11 129 206091 978.7 731 699 209.9
D 12 110 123235 583.89 731 699 209.9

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