ASTROSAT CZTI

Data Quality Report

Orbit 54981

Creation date: 2025-11-26T14:11:54.799676
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_014T01_9000006528_54981cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54981cztM0_level2_quad_clean.evt
Size (bytes)672,408,00068,653,440
Size641.3 MB 65.5 MB
Events in quadrant A2,924,709550,794
Events in quadrant B3,668,851587,376
Events in quadrant C2,904,480530,837
Events in quadrant D14,950,83412,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013128239
B015091136
C012769116
D049014712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56691262.222614%
B56752213.894273%
C5684761.337087%
D5656554297.984441%

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 6834 5683 71 71 1.04% 1.25%
B 6823 5687 95 95 1.39% 1.67%
C 6843 5697 56 56 0.82% 0.98%
D 6814 5659 5451 5451 80.00% 96.32%

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 0 8 247916 1605.26 622 606 154.1
A 13 248 169729 1097.76 622 606 154.1
A 15 32 54639 350.72 622 606 154.1
B 5 236 605156 4600.29 610 588 131.4
B 0 183 554867 4217.63 610 588 131.4
B 10 245 31335 233.96 610 588 131.4
C 13 3 208463 1249.73 604 600 166.3
C 4 5 138017 826.19 604 600 166.3
C 1 16 50490 299.95 604 600 166.3
D 15 94 13639000 221115.28 212 203 61.7
D 2 249 109099 1765.45 212 203 61.7
D 1 31 93088 1505.87 212 203 61.7

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