ASTROSAT CZTI

Data Quality Report

Orbit 58582

Creation date: 2026-07-26T20:26:33.845131
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_044T04_9000006592_58582cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58582cztM0_level2_quad_clean.evt
Size (bytes)499,962,24095,952,960
Size476.8 MB 91.5 MB
Events in quadrant A4,181,725629,043
Events in quadrant B5,851,046613,630
Events in quadrant C3,966,377619,955
Events in quadrant D3,985,219573,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170082
B0220502
C0164092
D0163622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67243395.041642%
B672596314.319703%
C67251582.349442%
D67252603.866171%

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 7654 6724 248 248 3.24% 3.69%
B 7655 6725 636 636 8.31% 9.46%
C 7655 6725 103 103 1.35% 1.53%
D 7655 6725 200 200 2.61% 2.97%

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 17 424477 2318.29 742 723 182.8
A 13 248 355151 1939.02 742 723 182.8
A 15 233 330096 1801.95 742 723 182.8
B 2 249 1253366 8478.52 687 662 147.8
B 6 255 1025113 6933.67 687 662 147.8
B 0 171 286877 1937.15 687 662 147.8
C 1 12 357019 1761.04 732 723 202.3
C 13 3 220066 1084.13 732 723 202.3
C 4 5 177189 872.2 732 723 202.3
D 8 240 522383 2518.34 728 694 207.2
D 3 12 138647 665.94 728 694 207.2
D 2 249 136566 655.89 728 694 207.2

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