ASTROSAT CZTI

Data Quality Report

Orbit 57129

Creation date: 2026-04-20T03:02:18.798107
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_083T10_9000006566_57129cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57129cztM0_level2_quad_clean.evt
Size (bytes)559,143,36089,976,960
Size533.2 MB 85.8 MB
Events in quadrant A3,159,671646,417
Events in quadrant B4,734,019622,889
Events in quadrant C7,334,679420,166
Events in quadrant D4,955,211574,153

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139432
B0186842
C0263917
D0192692

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6611400.605052%
B661169510.512782%
C6610227934.478064%
D66101372.072617%

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 7636 6612 14 14 0.18% 0.21%
B 7636 6612 584 584 7.65% 8.83%
C 7635 6610 1470 1470 19.25% 22.24%
D 7635 6611 160 160 2.10% 2.42%

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 256627 1445.45 716 698 177.1
A 10 251 50669 282.23 716 698 177.1
A 5 113 31398 173.39 716 698 177.1
B 10 16 1092187 7466.95 674 648 146.2
B 5 172 822383 5621.29 674 648 146.2
B 10 247 42796 288.32 674 648 146.2
C 15 198 4142136 28742.0 521 516 144.1
C 12 252 793283 5501.64 521 516 144.1
C 14 67 187607 1298.37 521 516 144.1
D 15 142 1716254 8966.23 679 650 191.3
D 2 249 139575 726.06 679 650 191.3
D 3 160 117781 612.16 679 650 191.3

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