ASTROSAT CZTI

Data Quality Report

Orbit 52153

Creation date: 2025-05-20T06:09:18.640353
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_9000006470_52153cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52153cztM0_level2_quad_clean.evt
Size (bytes)1,202,446,08085,919,040
Size1.1 GB 81.9 MB
Events in quadrant A7,358,124686,321
Events in quadrant B8,813,095620,923
Events in quadrant C10,081,990554,872
Events in quadrant D17,661,089199,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02744312
B0315803
C0353826
D0578010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77454345.603615%
B7748190024.522457%
C7747194725.132309%
D7750565272.929032%

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 7749 7748 438 438 5.65% 5.65%
B 7750 7749 1469 1469 18.95% 18.96%
C 7749 7748 1698 1698 21.91% 21.92%
D 7749 7749 5897 5897 76.10% 76.10%

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 4 3 1451532 7395.88 786 767 196.2
A 3 95 581840 2962.26 786 767 196.2
A 15 239 461657 2349.58 786 767 196.2
B 12 32 3718092 24380.21 719 694 152.5
B 10 254 1141355 7480.92 719 694 152.5
B 4 206 229808 1502.62 719 694 152.5
C 15 224 3847057 19387.32 713 709 198.4
C 15 192 1295351 6525.58 713 709 198.4
C 4 5 658641 3316.27 713 709 198.4
D 6 42 13232740 92700.22 496 473 142.7
D 15 94 690653 4835.14 496 473 142.7
D 11 176 372501 2606.29 496 473 142.7

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