ASTROSAT CZTI

Data Quality Report

Orbit 57190

Creation date: 2026-04-24T05:15:32.598724
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_070T08_9000006568_57190cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57190cztM0_level2_quad_clean.evt
Size (bytes)435,539,52085,815,360
Size415.4 MB 81.8 MB
Events in quadrant A2,728,871574,053
Events in quadrant B4,628,013570,640
Events in quadrant C4,612,002518,247
Events in quadrant D3,665,972498,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129032
B0180042
C0181172
D0155462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263270.431103%
B626369211.049018%
C62633185.077439%
D62621322.107953%

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 7738 6549 11 11 0.14% 0.17%
B 7738 6549 511 511 6.60% 7.80%
C 7738 6549 281 281 3.63% 4.29%
D 7737 6548 126 126 1.63% 1.92%

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 13 248 42039 247.78 672 657 167.0
A 3 14 34275 201.3 672 657 167.0
A 4 3 20402 118.23 672 657 167.0
B 5 185 1394543 10203.86 636 615 136.6
B 10 16 396226 2895.96 636 615 136.6
B 0 199 122672 893.48 636 615 136.6
C 15 224 1628432 9401.1 636 631 173.1
C 2 12 300144 1729.79 636 631 173.1
C 14 67 64268 367.53 636 631 173.1
D 12 33 410006 2243.97 638 609 182.4
D 7 96 303891 1662.33 638 609 182.4
D 2 249 184170 1006.13 638 609 182.4

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