ASTROSAT CZTI

Data Quality Report

Orbit 56410

Creation date: 2026-03-02T18:49:39.522731
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_083T05_9000006554_56410cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56410cztM0_level2_quad_clean.evt
Size (bytes)1,201,230,72065,580,480
Size1.1 GB 62.5 MB
Events in quadrant A11,688,277404,231
Events in quadrant B10,873,253384,478
Events in quadrant C4,091,038629,459
Events in quadrant D17,255,62064,541

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0397180
B0372160
C0173330
D0562567

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7219313043.357806%
B7219363650.367087%
C72202723.767313%
D7219655890.843607%

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 7218 7218 2792 2792 38.68% 38.68%
B 7219 7219 3196 3196 44.27% 44.27%
C 7220 7220 186 186 2.58% 2.58%
D 7218 7218 5724 5724 79.30% 79.30%

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 6645381 44422.63 598 584 149.6
A 12 194 834168 5572.78 598 584 149.6
A 0 8 584777 3905.52 598 584 149.6
B 5 172 6261692 54722.1 537 519 114.4
B 4 206 1499455 13100.57 537 519 114.4
B 5 185 605020 5283.29 537 519 114.4
C 15 215 568195 2793.86 738 732 203.1
C 12 252 184891 906.69 738 732 203.1
C 12 254 139829 684.83 738 732 203.1
D 8 129 15230819 171928.61 309 294 88.6
D 8 160 378600 4270.48 309 294 88.6
D 2 249 100321 1129.15 309 294 88.6

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