ASTROSAT CZTI

Data Quality Report

Orbit 57578

Creation date: 2026-05-20T09:11:03.713109
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_070T08_9000006576_57578cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57578cztM0_level2_quad_clean.evt
Size (bytes)513,097,920107,282,880
Size489.3 MB 102.3 MB
Events in quadrant A3,217,330724,753
Events in quadrant B4,172,934744,000
Events in quadrant C5,386,050647,525
Events in quadrant D5,633,837609,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152862
B0177572
C0212083
D0219102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7499710.946793%
B75004205.600000%
C74995627.494333%
D74995677.561008%

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 9269 7501 1 1 0.01% 0.01%
B 9270 7502 251 251 2.71% 3.35%
C 9269 7500 385 385 4.15% 5.13%
D 9269 7501 482 482 5.20% 6.43%

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 3 245 24614 117.14 819 796 203.3
A 3 14 15297 71.32 819 796 203.3
A 4 3 10384 47.15 819 796 203.3
B 2 249 757543 4477.63 797 767 169.0
B 10 247 69881 408.93 797 767 169.0
B 0 63 61627 360.09 797 767 169.0
C 12 254 1107481 5299.89 764 757 208.8
C 15 224 857069 4100.71 764 757 208.8
C 14 245 232280 1108.72 764 757 208.8
D 15 142 1635220 7466.99 773 736 218.9
D 3 224 222413 1012.71 773 736 218.9
D 8 160 182118 828.63 773 736 218.9

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