ASTROSAT CZTI

Data Quality Report

Orbit 59023

Creation date: 2026-08-25T13:12:42.534729
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_004T02_9000006600_59023cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59023cztM0_level2_quad_clean.evt
Size (bytes)763,902,72083,315,520
Size728.5 MB 79.5 MB
Events in quadrant A3,928,785651,273
Events in quadrant B4,768,329652,744
Events in quadrant C13,365,480172,539
Events in quadrant D5,697,520582,038

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161892
B0187642
C0441172
D0217082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66591702.552936%
B665969010.361916%
C6659498174.801021%
D66592223.333834%

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 7653 6658 39 39 0.51% 0.59%
B 7653 6658 414 414 5.41% 6.22%
C 7653 6658 4863 4863 63.54% 73.04%
D 7653 6658 114 114 1.49% 1.71%

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 0 24 714819 3893.0 757 738 183.4
A 10 251 81138 438.32 757 738 183.4
A 8 246 60121 323.74 757 738 183.4
B 2 249 1450574 9344.82 728 702 155.2
B 4 236 278111 1787.98 728 702 155.2
B 0 186 40377 255.72 728 702 155.2
C 15 219 11650356 104961.33 404 399 111.0
C 1 16 34481 307.06 404 399 111.0
C 12 250 30430 270.57 404 399 111.0
D 12 110 1867157 9070.71 726 697 205.8
D 2 62 467269 2267.47 726 697 205.8
D 12 1 285107 1382.19 726 697 205.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct