ASTROSAT CZTI

Data Quality Report

Orbit 42667

Creation date: 2024-06-27T22:42:50.415658
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/AS1A05_013T01_9000005822_42667cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42667cztM0_level2_quad_clean.evt
Size (bytes)385,637,76095,163,840
Size367.8 MB 90.8 MB
Events in quadrant A3,600,454638,889
Events in quadrant B3,903,211622,263
Events in quadrant C2,934,377631,221
Events in quadrant D3,384,531582,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141682
B0154952
C0124062
D0140142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58161101.891334%
B58163255.588033%
C5816220.378267%
D5816731.255158%

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 7220 5817 78 78 1.08% 1.34%
B 7220 5817 296 296 4.10% 5.09%
C 7220 5817 17 17 0.24% 0.29%
D 7220 5817 70 70 0.97% 1.20%

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 10 83 632300 4749.5 642 627 133.0
A 15 223 232919 1746.59 642 627 133.0
A 13 248 149769 1121.39 642 627 133.0
B 10 246 1219279 10022.79 622 604 121.6
B 0 245 81059 661.69 622 604 121.6
B 15 35 55890 454.69 622 604 121.6
C 15 214 245751 1684.8 622 626 145.5
C 14 254 150206 1028.1 622 626 145.5
C 3 233 39654 268.25 622 626 145.5
D 2 249 235485 1532.1 625 606 153.3
D 1 52 219533 1428.04 625 606 153.3
D 12 218 202829 1319.09 625 606 153.3

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