ASTROSAT CZTI

Data Quality Report

Orbit 58310

Creation date: 2026-07-08T16:09:00.348093
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_044T03_9000006588_58310cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58310cztM0_level2_quad_clean.evt
Size (bytes)620,055,36086,808,960
Size591.3 MB 82.8 MB
Events in quadrant A3,113,122646,461
Events in quadrant B10,582,024327,818
Events in quadrant C3,434,421622,593
Events in quadrant D5,308,029570,222

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139002
B0360417
C0149982
D0203062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66151532.312925%
B6614394459.631086%
C66141602.419111%
D66143565.382522%

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 7665 6616 17 17 0.22% 0.26%
B 7664 6615 2293 2293 29.92% 34.66%
C 7664 6615 81 81 1.06% 1.22%
D 7664 6615 281 281 3.67% 4.25%

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 8 61 39634 208.83 756 736 186.3
A 4 238 23094 120.03 756 736 186.3
A 4 3 22401 116.31 756 736 186.3
B 3 238 7261884 64537.45 521 502 112.5
B 2 249 681322 6050.97 521 502 112.5
B 4 206 346632 3076.32 521 502 112.5
C 15 204 241692 1205.14 724 718 200.0
C 12 249 118225 587.67 724 718 200.0
C 12 252 91093 451.98 724 718 200.0
D 11 129 1734949 8570.66 719 689 202.3
D 12 110 307825 1517.86 719 689 202.3
D 12 128 253030 1247.06 719 689 202.3

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