ASTROSAT CZTI

Data Quality Report

Orbit 51906

Creation date: 2025-05-03T16:12:59.333565
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_011T05_9000006466_51906cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51906cztM0_level2_quad_clean.evt
Size (bytes)703,656,000102,640,320
Size671.1 MB 97.9 MB
Events in quadrant A7,908,937632,535
Events in quadrant B5,092,508752,422
Events in quadrant C4,954,424662,695
Events in quadrant D7,496,820525,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288260
B0204060
C0202620
D0276994

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A767593112.130293%
B76752292.983713%
C76753324.325733%
D7675142018.501629%

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 7675 7675 720 720 9.38% 9.38%
B 7675 7675 152 152 1.98% 1.98%
C 7675 7675 215 215 2.80% 2.80%
D 7675 7675 1338 1338 17.43% 17.43%

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 7 64 2115710 11636.84 742 726 181.7
A 4 175 762618 4192.0 742 726 181.7
A 11 3 630861 3467.06 742 726 181.7
B 10 254 791027 4758.72 779 751 166.1
B 5 172 520643 3130.58 779 751 166.1
B 12 32 180633 1083.18 779 751 166.1
C 13 3 483284 2350.87 746 742 205.3
C 15 178 399058 1940.54 746 742 205.3
C 15 224 223749 1086.46 746 742 205.3
D 6 42 2528601 13192.13 664 637 191.6
D 3 12 579521 3020.9 664 637 191.6
D 0 5 509560 2655.8 664 637 191.6

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