ASTROSAT CZTI

Data Quality Report

Orbit 59179

Creation date: 2026-09-07T10:42:35.540116
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/AS1T05_271T01_9000006604_59179cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59179cztM0_level2_quad_clean.evt
Size (bytes)567,656,64098,141,760
Size541.4 MB 93.6 MB
Events in quadrant A4,698,277663,683
Events in quadrant B5,038,801665,930
Events in quadrant C3,420,919642,016
Events in quadrant D7,349,467545,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185402
B0193202
C0146752
D0264182

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65212944.508511%
B652166510.197822%
C6520751.150307%
D652072611.134969%

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 8681 6523 207 207 2.38% 3.17%
B 8681 6523 412 412 4.75% 6.32%
C 8680 6522 32 32 0.37% 0.49%
D 8680 6522 525 525 6.05% 8.05%

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 0 24 1293913 7132.71 742 722 181.3
A 3 245 490179 2699.64 742 722 181.3
A 10 251 24665 132.06 742 722 181.3
B 5 185 1315354 8592.95 712 686 153.0
B 4 236 605646 3954.15 712 686 153.0
B 4 171 145492 946.48 712 686 153.0
C 14 254 342788 1697.36 736 729 201.5
C 12 252 141510 698.58 736 729 201.5
C 13 3 29761 144.06 736 729 201.5
D 12 110 3113886 15726.21 700 672 198.0
D 11 129 845704 4268.63 700 672 198.0
D 8 160 224181 1129.04 700 672 198.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct