ASTROSAT CZTI

Data Quality Report

Orbit 54265

Creation date: 2025-10-10T16:05:40.029055
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/AS1C09_004T08_9000006514_54265cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54265cztM0_level2_quad_clean.evt
Size (bytes)711,740,16083,108,160
Size678.8 MB 79.3 MB
Events in quadrant A4,962,731577,165
Events in quadrant B3,752,339664,822
Events in quadrant C5,902,511533,510
Events in quadrant D11,208,805273,772

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194872
B0157862
C0222602
D0378582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66955908.812547%
B66951832.733383%
C669590213.472741%
D6696362254.091995%

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 7669 6694 492 492 6.42% 7.35%
B 7670 6695 79 79 1.03% 1.18%
C 7670 6696 811 811 10.57% 12.11%
D 7670 6695 3024 3024 39.43% 45.17%

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 29 2121883 12872.87 671 655 164.8
A 0 8 101842 614.06 671 655 164.8
A 3 14 31157 185.1 671 655 164.8
B 0 213 311915 2097.63 691 665 148.4
B 5 236 230331 1547.81 691 665 148.4
B 7 0 203051 1363.96 691 665 148.4
C 1 29 2576042 14701.65 642 640 175.2
C 15 215 232175 1321.71 642 640 175.2
C 14 254 212157 1207.44 642 640 175.2
D 8 176 9035244 71819.13 438 418 125.8
D 10 181 108780 861.39 438 418 125.8
D 3 12 61929 488.96 438 418 125.8

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