ASTROSAT CZTI

Data Quality Report

Orbit 58285

Creation date: 2026-07-06T23:37:45.179072
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_044T03_9000006588_58285cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58285cztM0_level2_quad_clean.evt
Size (bytes)947,263,68072,967,680
Size903.4 MB 69.6 MB
Events in quadrant A4,866,209636,397
Events in quadrant B10,528,822462,796
Events in quadrant C6,921,397292,584
Events in quadrant D12,206,103329,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01422

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019614199
B036517395
C026131501
D041735660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70183645.186663%
B6995269838.570407%
C6970370353.127690%
D6971335848.170994%

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 7089 7058 349 349 4.92% 4.94%
B 7087 7047 2151 2151 30.35% 30.52%
C 7088 6977 1012 1012 14.28% 14.50%
D 7088 7034 3394 3394 47.88% 48.25%

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 4 238 1049261 5649.4 743 725 185.6
A 10 251 297072 1596.69 743 725 185.6
A 12 114 164770 883.86 743 725 185.6
B 10 128 6006283 44567.61 625 602 134.8
B 4 206 679741 5039.83 625 602 134.8
B 4 158 624169 4627.43 625 602 134.8
C 15 199 4855290 48449.89 360 357 100.2
C 6 223 227202 2263.8 360 357 100.2
C 12 252 183617 1828.85 360 357 100.2
D 12 110 9081344 59284.91 529 504 153.2
D 2 120 338309 2205.38 529 504 153.2
D 13 170 275054 1792.42 529 504 153.2

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