ASTROSAT CZTI

Data Quality Report

Orbit 56453

Creation date: 2026-03-05T16:01:04.388909
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_060T01_9000006556_56453cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56453cztM0_level2_quad_clean.evt
Size (bytes)876,778,560102,265,920
Size836.2 MB 97.5 MB
Events in quadrant A12,651,916454,607
Events in quadrant B6,900,019745,688
Events in quadrant C4,498,721715,562
Events in quadrant D7,784,866623,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428671
B0257971
C0188021
D0286221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8016334841.766467%
B801791211.375826%
C80172262.819010%
D80177909.854060%

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 8016 8016 3188 3188 39.77% 39.77%
B 8017 8017 475 475 5.92% 5.92%
C 8017 8017 90 90 1.12% 1.12%
D 8017 8017 857 857 10.69% 10.69%

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 3 7697822 46590.12 668 650 165.2
A 12 194 974598 5895.2 668 650 165.2
A 3 14 824742 4988.14 668 650 165.2
B 5 172 1685419 9172.83 853 823 183.7
B 4 206 1474381 8023.71 853 823 183.7
B 0 63 71526 384.99 853 823 183.7
C 12 254 505208 2134.98 865 859 236.2
C 1 16 271265 1144.67 865 859 236.2
C 6 223 122795 516.17 865 859 236.2
D 5 113 3503198 14867.38 842 806 235.6
D 2 249 389649 1650.61 842 806 235.6
D 2 31 130331 549.82 842 806 235.6

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