ASTROSAT CZTI

Data Quality Report

Orbit 53050

Creation date: 2025-07-19T15:12:35.672681
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/AS1C09_011T07_9000006488_53050cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53050cztM0_level2_quad_clean.evt
Size (bytes)749,580,48086,601,600
Size714.9 MB 82.6 MB
Events in quadrant A7,144,741575,833
Events in quadrant B4,290,415654,169
Events in quadrant C9,508,184411,099
Events in quadrant D6,293,101520,319

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258341
B0173571
C0328421
D0233783

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A660290213.662527%
B66033555.376344%
C6603240136.362260%
D660281812.390185%

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 7692 6603 771 771 10.02% 11.68%
B 7693 6604 197 197 2.56% 2.98%
C 7693 6604 2233 2233 29.03% 33.81%
D 7692 6603 839 839 10.91% 12.71%

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 9 191 3048496 18495.23 660 643 164.8
A 7 206 557169 3377.16 660 643 164.8
A 15 190 359666 2178.65 660 643 164.8
B 1 255 764534 5384.98 669 645 141.9
B 10 247 382976 2695.21 669 645 141.9
B 0 213 105300 737.76 669 645 141.9
C 12 254 2721538 18261.04 541 537 149.0
C 1 241 2049927 13753.76 541 537 149.0
C 15 224 1253989 8412.1 541 537 149.0
D 8 176 2029332 11320.34 627 597 179.2
D 12 17 565693 3153.24 627 597 179.2
D 15 78 314254 1750.21 627 597 179.2

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