ASTROSAT CZTI

Data Quality Report

Orbit 54045

Creation date: 2025-09-24T17:47:43.036577
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_041T01_9000006510_54045cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54045cztM0_level2_quad_clean.evt
Size (bytes)1,221,338,880178,067,520
Size1.1 GB 169.8 MB
Events in quadrant A6,420,0491,276,902
Events in quadrant B8,240,9081,362,319
Events in quadrant C9,676,8971,150,180
Events in quadrant D19,795,031641,682

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298265
B0349001
C0388141
D06895510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138972221.597467%
B138996374.583064%
C1389910177.317073%
D13897602143.325898%

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 14199 13900 76 76 0.54% 0.55%
B 14199 13901 274 274 1.93% 1.97%
C 14199 13901 803 803 5.66% 5.78%
D 14198 13898 4784 4784 33.69% 34.42%

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 15 174 339635 940.27 1469 1432 359.7
A 7 14 82336 224.93 1469 1432 359.7
A 13 248 50074 135.23 1469 1432 359.7
B 5 236 1053591 3369.32 1455 1399 312.3
B 5 185 712718 2277.78 1455 1399 312.3
B 4 171 242954 773.51 1455 1399 312.3
C 13 3 982797 2628.83 1383 1371 373.3
C 15 158 795787 2127.91 1383 1371 373.3
C 4 5 793058 2120.6 1383 1371 373.3
D 8 176 13799430 48088.85 1006 960 286.9
D 2 165 975997 3398.09 1006 960 286.9
D 3 12 630048 2192.43 1006 960 286.9

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