ASTROSAT CZTI

Data Quality Report

Orbit 52633

Creation date: 2025-06-23T19:47:15.835538
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_011T06_9000006478_52633cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52633cztM0_level2_quad_clean.evt
Size (bytes)644,477,76092,773,440
Size614.6 MB 88.5 MB
Events in quadrant A3,575,633628,433
Events in quadrant B4,391,867667,388
Events in quadrant C8,410,236518,609
Events in quadrant D6,943,940512,841

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156350
B0179420
C0297960
D0255321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6913670.969188%
B69131812.618255%
C6913116016.779980%
D691280311.617477%

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 6913 6913 59 59 0.85% 0.85%
B 6913 6913 72 72 1.04% 1.04%
C 6913 6913 1209 1209 17.49% 17.49%
D 6912 6912 732 732 10.59% 10.59%

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 3 46 255856 1423.78 703 684 179.2
A 4 249 140474 779.98 703 684 179.2
A 14 239 101558 562.85 703 684 179.2
B 10 254 625439 4223.8 692 667 147.9
B 8 234 297069 2003.84 692 667 147.9
B 10 44 194998 1313.78 692 667 147.9
C 15 248 4874000 27728.07 637 632 175.8
C 15 144 268938 1526.58 637 632 175.8
C 15 147 241522 1370.59 637 632 175.8
D 8 176 1764132 9483.28 649 621 186.0
D 6 42 1672687 8991.54 649 621 186.0
D 2 153 242781 1302.22 649 621 186.0

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