ASTROSAT CZTI

Data Quality Report

Orbit 57455

Creation date: 2026-05-12T01:37:03.765821
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_113T09_9000006574_57455cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57455cztM0_level2_quad_clean.evt
Size (bytes)502,634,88098,196,480
Size479.3 MB 93.6 MB
Events in quadrant A3,214,489653,959
Events in quadrant B4,454,342678,358
Events in quadrant C5,082,843599,789
Events in quadrant D5,318,129559,783

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146571
B0178971
C0198361
D0205571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6906250.362004%
B69072834.097293%
C69073304.777762%
D69064466.458152%

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 7311 6907 2 2 0.03% 0.03%
B 7312 6908 122 122 1.67% 1.77%
C 7312 6908 263 263 3.60% 3.81%
D 7311 6907 431 431 5.90% 6.24%

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 3 14 231256 1271.46 738 720 181.3
A 4 95 108230 592.94 738 720 181.3
A 4 3 10804 55.62 738 720 181.3
B 4 206 1123253 7269.0 720 692 154.4
B 0 63 137287 884.5 720 692 154.4
B 10 247 92310 593.26 720 692 154.4
C 15 224 1755769 9161.73 699 693 191.6
C 14 254 142722 741.41 699 693 191.6
C 3 248 139355 723.83 699 693 191.6
D 15 142 894291 4555.42 695 664 196.2
D 8 240 693003 3529.32 695 664 196.2
D 7 96 303741 1544.99 695 664 196.2

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