ASTROSAT CZTI

Data Quality Report

Orbit 58904

Creation date: 2026-08-17T12:35:21.883970
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_004T07_9000006598_58904cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58904cztM0_level2_quad_clean.evt
Size (bytes)636,595,20093,954,240
Size607.1 MB 89.6 MB
Events in quadrant A6,788,731590,839
Events in quadrant B4,104,825698,375
Events in quadrant C3,960,555632,638
Events in quadrant D8,209,891471,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246192
B0164742
C0161832
D0289682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646599715.421500%
B64653886.001547%
C64652313.573086%
D6465153923.805104%

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 7630 6466 704 704 9.23% 10.89%
B 7630 6466 192 192 2.52% 2.97%
C 7630 6466 137 137 1.80% 2.12%
D 7630 6466 1398 1398 18.32% 21.62%

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 14 238 3870453 21714.31 720 702 178.2
A 0 24 62634 347.52 720 702 178.2
A 15 233 26623 145.45 720 702 178.2
B 5 172 357177 2273.51 738 711 156.8
B 4 171 218020 1385.98 738 711 156.8
B 4 201 211032 1341.41 738 711 156.8
C 12 252 446221 2237.91 726 717 199.1
C 4 5 433683 2174.93 726 717 199.1
C 12 249 94317 470.18 726 717 199.1
D 12 110 5191073 28003.21 657 630 185.4
D 11 129 269494 1450.56 657 630 185.4
D 5 32 53061 282.87 657 630 185.4

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

TCT plots

Parameter TCT0 TCT_healed
Tct