ASTROSAT CZTI

Data Quality Report

Orbit 54390

Creation date: 2025-10-17T20:24:10.181341
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_126T19_9000006518_54390cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54390cztM0_level2_quad_clean.evt
Size (bytes)647,956,800100,892,160
Size617.9 MB 96.2 MB
Events in quadrant A3,315,867697,629
Events in quadrant B4,567,481726,296
Events in quadrant C4,071,884655,264
Events in quadrant D11,449,873454,851

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153851
B0187860
C0174180
D0392690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A748170.093570%
B74812723.635878%
C74821111.483561%
D7482228530.539963%

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 7481 7481 0 0 0.00% 0.00%
B 7481 7481 210 210 2.81% 2.81%
C 7482 7482 105 105 1.40% 1.40%
D 7482 7482 2161 2161 28.88% 28.88%

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 8 6 115125 583.24 791 770 196.1
A 7 206 63195 318.38 791 770 196.1
A 7 221 26991 133.73 791 770 196.1
B 10 14 910301 5542.66 766 738 164.1
B 7 0 241493 1467.1 766 738 164.1
B 0 213 121056 733.19 766 738 164.1
C 10 22 194491 941.27 758 752 205.8
C 9 38 193917 938.48 758 752 205.8
C 14 254 159534 771.44 758 752 205.8
D 8 176 7770746 40766.65 662 632 190.6
D 2 62 560423 2937.0 662 632 190.6
D 15 108 161212 842.5 662 632 190.6

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