ASTROSAT CZTI

Data Quality Report

Orbit 54493

Creation date: 2025-10-25T11:39:38.031906
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_127T09_9000006520_54493cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54493cztM0_level2_quad_clean.evt
Size (bytes)485,680,320106,911,360
Size463.2 MB 102.0 MB
Events in quadrant A3,527,578709,059
Events in quadrant B4,094,413752,492
Events in quadrant C4,630,465655,616
Events in quadrant D5,134,723590,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160200
B0174990
C0192410
D0207140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7602150.197316%
B76021431.881084%
C76022563.367535%
D76025677.458564%

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 7602 7602 7 7 0.09% 0.09%
B 7602 7602 69 69 0.91% 0.91%
C 7602 7602 237 237 3.12% 3.12%
D 7602 7602 424 424 5.58% 5.58%

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 14 235 117781 575.81 818 797 203.2
A 0 8 83870 408.9 818 797 203.2
A 12 15 49263 238.56 818 797 203.2
B 2 249 266090 1514.79 802 774 175.1
B 0 213 245935 1399.72 802 774 175.1
B 7 0 237375 1350.85 802 774 175.1
C 7 64 735059 3423.9 783 775 214.5
C 13 3 276396 1285.2 783 775 214.5
C 15 209 132735 615.32 783 775 214.5
D 15 107 1120385 5132.23 761 722 218.2
D 2 172 236140 1079.09 761 722 218.2
D 3 12 231758 1059.0 761 722 218.2

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