ASTROSAT CZTI

Data Quality Report

Orbit 58511

Creation date: 2026-07-22T02:11:39.506927
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_044T04_9000006592_58511cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58511cztM0_level2_quad_clean.evt
Size (bytes)473,279,04094,291,200
Size451.4 MB 89.9 MB
Events in quadrant A4,074,813592,745
Events in quadrant B3,959,472677,167
Events in quadrant C4,042,467596,763
Events in quadrant D4,951,178547,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164522
B0160162
C0164342
D0191342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63205208.227848%
B63202513.971519%
C63202714.287975%
D63194216.662447%

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 7450 6321 309 309 4.15% 4.89%
B 7450 6320 129 129 1.73% 2.04%
C 7450 6321 269 269 3.61% 4.26%
D 7449 6320 388 388 5.21% 6.14%

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 12 80 1160596 6708.17 687 670 172.9
A 3 14 108525 623.75 687 670 172.9
A 10 17 40681 231.39 687 670 172.9
B 5 185 583838 3886.09 704 680 150.1
B 10 247 179741 1193.24 704 680 150.1
B 8 234 175786 1166.88 704 680 150.1
C 4 5 1082589 5681.28 688 679 190.4
C 9 38 56726 294.31 688 679 190.4
C 12 249 42555 219.89 688 679 190.4
D 3 12 802937 4205.34 669 636 190.8
D 8 240 665125 3482.98 669 636 190.8
D 2 153 421606 2206.55 669 636 190.8

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