ASTROSAT CZTI

Data Quality Report

Orbit 10424

Creation date: 2024-06-27T15:59:45.469313
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/AS1G07_066T01_9000001510_10424cztM0_level2.evt modeM0/AS1G07_066T01_9000001510_10424cztM0_level2_quad_clean.evt
Size (bytes)228,291,84044,501,760
Size217.7 MB 42.4 MB
Events in quadrant A1,818,994286,543
Events in quadrant B1,669,242284,355
Events in quadrant C1,448,813288,795
Events in quadrant D1,776,675279,372

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0686
B0686
C0687
D0676

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08354969
B080571271
C06996730
D081721173

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29121424.876374%
B28871665.749913%
C2973913.060881%
D28891123.876774%

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 3696 2980 1 1 0.03% 0.03%
B 3696 2948 25 25 0.68% 0.85%
C 3696 3021 6 6 0.16% 0.20%
D 3692 2946 18 18 0.49% 0.61%

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 13 251 417219 5516.0 362 352 75.6
A 8 15 3442 40.89 362 352 75.6
A 13 253 3310 39.14 362 352 75.6
B 4 239 223800 3154.06 355 345 70.8
B 0 214 34238 478.4 355 345 70.8
B 10 245 11861 162.55 355 345 70.8
C 14 234 18815 213.38 366 365 86.5
C 13 61 2749 27.57 366 365 86.5
C 14 67 2349 22.95 366 365 86.5
D 8 195 262224 3026.87 355 344 86.5
D 9 85 51376 589.84 355 344 86.5
D 1 52 50704 582.07 355 344 86.5

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