ASTROSAT CZTI

Data Quality Report

Orbit 52966

Creation date: 2025-07-18T11:33:30.309897
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/AS1A13_003T01_9000006486_52966cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52966cztM0_level2_quad_clean.evt
Size (bytes)1,148,719,68091,100,160
Size1.1 GB 86.9 MB
Events in quadrant A19,042,382102,816
Events in quadrant B6,286,638805,376
Events in quadrant C7,213,927663,177
Events in quadrant D9,371,344635,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0618480
B0241360
C0269230
D0334370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78587858100.000000%
B78596948.830640%
C7859121515.459982%
D7859116914.874666%

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 7887 7857 7638 7638 96.84% 97.21%
B 7889 7859 283 283 3.59% 3.60%
C 7889 7859 942 942 11.94% 11.99%
D 7889 7860 870 870 11.03% 11.07%

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 18291956 498408.75 137 133 36.7
A 0 8 63621 1729.88 137 133 36.7
A 15 174 41786 1134.93 137 133 36.7
B 10 128 1198095 6584.23 854 823 181.8
B 10 254 775472 4260.07 854 823 181.8
B 12 17 364714 2001.17 854 823 181.8
C 12 254 829634 3833.17 798 792 216.2
C 2 12 556208 2568.65 798 792 216.2
C 15 224 528372 2439.91 798 792 216.2
D 2 62 1828560 8071.27 803 770 226.5
D 15 78 1823838 8050.41 803 770 226.5
D 8 176 443620 1955.56 803 770 226.5

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