ASTROSAT CZTI

Data Quality Report

Orbit 55953

Creation date: 2026-02-05T20:17:11.603606
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_066T02_9000006546_55953cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55953cztM0_level2_quad_clean.evt
Size (bytes)547,257,60091,212,480
Size521.9 MB 87.0 MB
Events in quadrant A4,522,828619,453
Events in quadrant B3,271,097668,247
Events in quadrant C3,964,397582,211
Events in quadrant D7,990,940435,407

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182621
B0143561
C0167011
D0282191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65472624.001833%
B6546971.481821%
C65482684.092853%
D6548165025.198534%

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 7648 6548 179 179 2.34% 2.73%
B 7648 6548 32 32 0.42% 0.49%
C 7649 6549 201 201 2.63% 3.07%
D 7649 6549 1600 1600 20.92% 24.43%

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 7 64 802350 4659.66 689 672 172.0
A 12 115 668811 3883.48 689 672 172.0
A 3 14 227194 1316.63 689 672 172.0
B 0 171 151176 1034.79 684 660 145.5
B 4 21 78806 537.25 684 660 145.5
B 2 249 58440 397.23 684 660 145.5
C 15 193 517034 2807.14 666 660 184.0
C 1 29 272008 1475.12 666 660 184.0
C 15 199 243471 1319.98 666 660 184.0
D 11 129 5453553 32251.73 590 564 169.1
D 5 173 46710 272.93 590 564 169.1
D 2 31 41520 242.23 590 564 169.1

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