ASTROSAT CZTI

Data Quality Report

Orbit 43767

Creation date: 2024-06-27T22:55:32.598635
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_026T01_9000005904_43767cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43767cztM0_level2_quad_clean.evt
Size (bytes)614,171,52099,593,280
Size585.7 MB 95.0 MB
Events in quadrant A4,652,381704,851
Events in quadrant B4,497,775711,286
Events in quadrant C5,147,758682,303
Events in quadrant D7,933,579464,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185781
B0176922
C0197251
D0279941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64842153.315854%
B64833725.738084%
C64834977.666204%
D6484194129.935225%

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 6889 6485 72 72 1.05% 1.11%
B 6888 6484 145 145 2.11% 2.24%
C 6888 6484 365 365 5.30% 5.63%
D 6889 6485 1619 1619 23.50% 24.97%

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 10 83 936563 5985.59 744 727 156.3
A 13 248 258620 1649.48 744 727 156.3
A 15 223 249656 1592.14 744 727 156.3
B 0 200 603276 4137.54 741 718 145.6
B 5 235 338073 2316.49 741 718 145.6
B 5 255 132123 902.31 741 718 145.6
C 15 158 1509497 9007.81 714 716 167.5
C 3 233 571446 3407.41 714 716 167.5
C 15 157 132829 788.75 714 716 167.5
D 5 235 4250942 26277.15 618 597 161.8
D 1 52 238922 1473.41 618 597 161.8
D 5 222 173654 1069.9 618 597 161.8

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