ASTROSAT CZTI

Data Quality Report

Orbit 51252

Creation date: 2025-03-20T13:11:25.999901
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/AS1C07_001T01_9000006454_51252cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51252cztM0_level2_quad_clean.evt
Size (bytes)657,495,360104,823,360
Size627.0 MB 100.0 MB
Events in quadrant A7,270,858674,444
Events in quadrant B4,658,409757,916
Events in quadrant C7,466,965578,189
Events in quadrant D4,349,287631,134

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270200
B0192180
C0276401
D0186780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76523594.691584%
B76521461.907998%
C7652138718.125980%
D76521742.273915%

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 7652 7652 238 238 3.11% 3.11%
B 7652 7652 77 77 1.01% 1.01%
C 7651 7651 1234 1234 16.13% 16.13%
D 7652 7652 145 145 1.89% 1.89%

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 2214091 11665.86 770 751 189.7
A 12 80 766044 4033.63 770 751 189.7
A 12 194 256230 1346.55 770 751 189.7
B 10 254 308517 1841.45 780 751 167.1
B 4 171 287581 1716.19 780 751 167.1
B 7 252 218005 1299.89 780 751 167.1
C 4 12 3991245 20361.98 705 700 196.0
C 3 233 215740 1097.25 705 700 196.0
C 13 3 147912 751.16 705 700 196.0
D 10 181 406611 1947.47 743 715 208.4
D 7 96 239793 1147.09 743 715 208.4
D 2 207 147221 702.93 743 715 208.4

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