ASTROSAT CZTI

Data Quality Report

Orbit 57670

Creation date: 2026-05-26T12:24:32.639667
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/AS1A14_125T09_9000006578_57670cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57670cztM0_level2_quad_clean.evt
Size (bytes)443,816,64099,095,040
Size423.3 MB 94.5 MB
Events in quadrant A3,111,421673,455
Events in quadrant B3,397,307717,487
Events in quadrant C4,618,016627,362
Events in quadrant D4,794,899528,833

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138692
B0145372
C0181222
D0187012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65101191.827957%
B65102453.763441%
C65103585.499232%
D651097715.007680%

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 6510 24 24 0.31% 0.37%
B 7675 6510 72 72 0.94% 1.11%
C 7675 6510 242 242 3.15% 3.72%
D 7675 6510 528 528 6.88% 8.11%

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 7 223 98057 531.74 739 718 183.1
A 14 254 44036 236.64 739 718 183.1
A 7 160 34198 182.89 739 718 183.1
B 5 185 244206 1588.46 726 698 153.3
B 10 16 125899 816.72 726 698 153.3
B 4 80 52497 337.9 726 698 153.3
C 15 224 1502421 7731.65 715 708 194.2
C 14 254 124060 635.08 715 708 194.2
C 12 2 61407 312.51 715 708 194.2
D 8 240 1886405 10294.63 649 619 183.2
D 7 253 144950 787.91 649 619 183.2
D 3 12 49439 266.51 649 619 183.2

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