ASTROSAT CZTI

Data Quality Report

Orbit 56399

Creation date: 2026-03-02T02:26:10.463622
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_083T05_9000006554_56399cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56399cztM0_level2_quad_clean.evt
Size (bytes)2,372,333,760212,365,440
Size2.2 GB 202.5 MB
Events in quadrant A30,606,105952,828
Events in quadrant B16,993,3461,622,371
Events in quadrant C9,253,5791,650,651
Events in quadrant D29,520,142912,330

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01036484
B0633537
C0419004
D01008854

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18714870546.515977%
B18713283015.123176%
C187132641.410784%
D18713785041.949447%

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 19869 18715 7589 7589 38.20% 40.55%
B 19868 18717 1612 1612 8.11% 8.61%
C 19868 18717 167 167 0.84% 0.89%
D 19868 18716 6591 6591 33.17% 35.22%

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 13611262 37128.38 1485 1451 366.6
A 7 64 5832990 15908.79 1485 1451 366.6
A 12 194 1654320 4509.13 1485 1451 366.6
B 4 206 5499742 13821.09 1878 1808 397.8
B 5 172 1997674 5017.35 1878 1808 397.8
B 4 171 791451 1985.06 1878 1808 397.8
C 13 3 523641 982.74 1936 1912 530.9
C 12 249 416044 780.07 1936 1912 530.9
C 6 223 199675 372.51 1936 1912 530.9
D 8 129 21947595 55248.42 1402 1337 397.2
D 2 249 506299 1271.21 1402 1337 397.2
D 13 153 288470 722.84 1402 1337 397.2

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