ASTROSAT CZTI

Data Quality Report

Orbit 56889

Creation date: 2026-04-04T00:10:11.660908
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_083T14_9000006564_56889cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56889cztM0_level2_quad_clean.evt
Size (bytes)403,462,08097,341,120
Size384.8 MB 92.8 MB
Events in quadrant A3,053,401638,852
Events in quadrant B3,133,310682,577
Events in quadrant C3,438,126601,599
Events in quadrant D4,776,548546,912

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01406
B01402
C01402
D01404

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014717331
B014764290
C015717487
D019544538

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6854210.306390%
B6862370.539201%
C6841630.920918%
D68544246.186169%

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 7000 6935 17 17 0.24% 0.25%
B 7000 6934 27 27 0.39% 0.39%
C 7001 6911 47 47 0.67% 0.68%
D 7001 6910 378 378 5.40% 5.47%

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 3 149221 844.16 706 686 176.0
A 4 249 66157 372.09 706 686 176.0
A 12 194 28603 158.66 706 686 176.0
B 8 128 70763 469.49 700 673 149.3
B 5 185 61306 406.14 700 673 149.3
B 0 153 39210 258.13 700 673 149.3
C 13 3 238925 1271.21 677 670 187.4
C 12 249 138020 732.83 677 670 187.4
C 1 16 94781 502.13 677 670 187.4
D 2 249 1069336 5701.46 661 633 187.4
D 0 160 588866 3138.18 661 633 187.4
D 8 240 175878 934.92 661 633 187.4

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