ASTROSAT CZTI

Data Quality Report

Orbit 53141

Creation date: 2025-07-25T19:12:04.494729
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/AS1C09_011T07_9000006488_53141cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53141cztM0_level2_quad_clean.evt
Size (bytes)1,116,224,64069,258,240
Size1.0 GB 66.0 MB
Events in quadrant A17,817,4354,262
Events in quadrant B10,035,308515,629
Events in quadrant C8,919,914496,340
Events in quadrant D4,000,640588,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577220
B0347610
C0314240
D0170130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7064703299.546999%
B7064221831.398641%
C7065170524.133050%
D70651191.684360%

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 7063 7063 6125 6125 86.72% 86.72%
B 7064 7064 1634 1634 23.13% 23.13%
C 7065 7064 1431 1431 20.25% 20.26%
D 7065 7065 120 120 1.70% 1.70%

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 9 191 16368706 259183.64 244 238 63.2
A 0 8 321945 5094.01 244 238 63.2
A 12 80 48523 764.56 244 238 63.2
B 10 254 4642893 34403.85 627 604 134.9
B 2 249 2314689 17149.61 627 604 134.9
B 0 213 249876 1847.35 627 604 134.9
C 15 224 2104020 12200.51 627 622 172.4
C 15 157 2093723 12140.78 627 622 172.4
C 9 38 616452 3572.05 627 622 172.4
D 12 3 466258 2344.48 696 665 198.6
D 3 12 231996 1164.86 696 665 198.6
D 8 176 144049 722.0 696 665 198.6

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