ASTROSAT CZTI

Data Quality Report

Orbit 22831

Creation date: 2024-06-27T18:46:22.350299
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/AS1C05_012T02_9000003372_22831cztM0_level2.evt modeM0/AS1C05_012T02_9000003372_22831cztM0_level2_quad_clean.evt
Size (bytes)503,622,720115,444,800
Size480.3 MB 110.1 MB
Events in quadrant A3,307,649771,003
Events in quadrant B3,322,713778,122
Events in quadrant C3,275,320732,703
Events in quadrant D4,862,061717,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145421
B0145781
C0144772
D0192251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7139420.588318%
B7140550.770308%
C7139881.232666%
D71391131.582855%

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 7434 7140 0 0 0.00% 0.00%
B 7435 7141 0 0 0.00% 0.00%
C 7434 7140 0 0 0.00% 0.00%
D 7434 7140 53 53 0.71% 0.74%

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 13 252 39751 228.63 847 828 170.2
A 13 254 12515 68.65 847 828 170.2
A 3 137 7353 38.33 847 828 170.2
B 12 111 19284 115.85 838 816 159.4
B 11 111 17279 103.28 838 816 159.4
B 0 230 15598 92.73 838 816 159.4
C 14 238 129302 685.55 804 806 187.4
C 13 61 5688 26.05 804 806 187.4
C 8 128 4658 20.55 804 806 187.4
D 1 52 762656 3817.3 821 796 199.6
D 12 227 363739 1818.53 821 796 199.6
D 7 238 241275 1204.92 821 796 199.6

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