ASTROSAT CZTI

Data Quality Report

Orbit 52509

Creation date: 2025-06-13T04:07:52.002684
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_037T01_9000006476_52509cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52509cztM0_level2_quad_clean.evt
Size (bytes)810,671,04087,137,280
Size773.1 MB 83.1 MB
Events in quadrant A3,331,241693,487
Events in quadrant B5,160,248681,041
Events in quadrant C11,260,148356,187
Events in quadrant D9,755,109455,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146621
B0199041
C0379887
D0334931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64861392.143077%
B64874226.505318%
C6486314048.411964%
D6486203631.390688%

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 7521 6486 57 57 0.76% 0.88%
B 7522 6487 256 256 3.40% 3.95%
C 7521 6486 2956 2956 39.30% 45.58%
D 7521 6486 2085 2085 27.72% 32.15%

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 18 251177 1353.82 730 712 185.0
A 13 248 58169 310.57 730 712 185.0
A 12 194 36940 195.82 730 712 185.0
B 10 254 1003822 6629.29 698 674 151.3
B 10 44 496973 3279.78 698 674 151.3
B 7 0 255066 1681.15 698 674 151.3
C 15 224 7469560 49824.45 527 521 149.9
C 4 5 436564 2908.75 527 521 149.9
C 9 38 430992 2871.59 527 521 149.9
D 15 93 5428280 29723.42 620 590 182.6
D 8 176 464457 2540.25 620 590 182.6
D 6 42 427808 2339.56 620 590 182.6

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