ASTROSAT CZTI

Data Quality Report

Orbit 51026

Creation date: 2025-03-05T08:32:43.204518
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/AS1C07_001T02_9000006452_51026cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51026cztM0_level2_quad_clean.evt
Size (bytes)520,680,96095,929,920
Size496.6 MB 91.5 MB
Events in quadrant A4,607,952630,674
Events in quadrant B5,465,932610,290
Events in quadrant C3,921,133619,582
Events in quadrant D4,739,670560,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185392
B0212392
C0167592
D0192032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69412103.025501%
B694193113.413053%
C69411381.988186%
D69423765.416307%

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 8621 6943 140 140 1.62% 2.02%
B 8621 6942 535 535 6.21% 7.71%
C 8621 6943 101 101 1.17% 1.45%
D 8622 6944 325 325 3.77% 4.68%

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 3 383572 2164.78 713 695 176.9
A 4 249 183629 1034.31 713 695 176.9
A 12 80 171503 965.75 713 695 176.9
B 4 81 1159115 7996.7 682 657 144.9
B 12 32 859662 5929.61 682 657 144.9
B 4 171 177033 1217.5 682 657 144.9
C 15 147 174620 897.18 702 696 193.9
C 6 13 161084 827.35 702 696 193.9
C 9 38 116354 596.62 702 696 193.9
D 2 216 941554 4987.99 672 649 188.6
D 8 176 582996 3087.18 672 649 188.6
D 2 249 86588 455.59 672 649 188.6

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