ASTROSAT CZTI

Data Quality Report

Orbit 58206

Creation date: 2026-07-01T14:05:13.665059
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_042T02_9000006586_58206cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58206cztM0_level2_quad_clean.evt
Size (bytes)556,450,56094,691,520
Size530.7 MB 90.3 MB
Events in quadrant A2,979,174660,607
Events in quadrant B6,961,876620,450
Events in quadrant C3,081,571625,692
Events in quadrant D7,073,674509,271

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134492
B0251402
C0138163
D0254582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6466851.314569%
B6466106016.393443%
C6465921.423047%
D6465110217.045630%

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 7606 6466 16 16 0.21% 0.25%
B 7606 6466 737 737 9.69% 11.40%
C 7605 6465 29 29 0.38% 0.45%
D 7605 6465 956 956 12.57% 14.79%

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 78251 421.4 742 722 184.0
A 4 3 11767 60.03 742 722 184.0
A 13 254 9278 46.51 742 722 184.0
B 10 128 3019121 20374.7 691 665 148.1
B 2 249 341803 2302.7 691 665 148.1
B 5 185 315866 2127.62 691 665 148.1
C 9 237 77479 392.08 718 710 195.8
C 12 252 73225 370.35 718 710 195.8
C 4 239 56275 283.78 718 710 195.8
D 12 110 4115762 21430.22 679 650 192.0
D 8 240 104870 542.75 679 650 192.0
D 8 160 42279 216.79 679 650 192.0

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