ASTROSAT CZTI

Data Quality Report

Orbit 54464

Creation date: 2025-10-23T10:46:44.578441
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_126T19_9000006518_54464cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54464cztM0_level2_quad_clean.evt
Size (bytes)838,100,16091,903,680
Size799.3 MB 87.6 MB
Events in quadrant A3,759,254685,136
Events in quadrant B4,140,290726,370
Events in quadrant C6,370,225626,374
Events in quadrant D16,174,999225,062

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167110
B0177852
C0240920
D0531780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74701261.686747%
B74702413.226238%
C74704636.198126%
D7470503467.389558%

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 7470 7470 85 85 1.14% 1.14%
B 7470 7470 116 116 1.55% 1.55%
C 7470 7470 431 431 5.77% 5.77%
D 7469 7469 5022 5022 67.24% 67.24%

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 8 9 506644 2614.97 790 769 193.5
A 4 61 95158 487.91 790 769 193.5
A 4 3 20518 102.08 790 769 193.5
B 5 185 576267 3463.56 774 746 166.2
B 0 213 315218 1892.53 774 746 166.2
B 7 0 83536 498.24 774 746 166.2
C 7 64 1631952 8044.96 748 743 202.8
C 4 5 791985 3902.32 748 743 202.8
C 12 2 609344 3001.56 748 743 202.8
D 8 176 8781059 61043.49 502 478 143.8
D 10 199 4551548 31639.5 502 478 143.8
D 7 70 387607 2691.36 502 478 143.8

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