ASTROSAT CZTI

Data Quality Report

Orbit 40231

Creation date: 2024-06-27T22:13:55.045739
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/AS1T05_086T01_9000005534_40231cztM0_level2.fits modeM0/AS1T05_086T01_9000005534_40231cztM0_level2_quad_clean.evt
Size (bytes)237,257,28046,506,240
Size226.3 MB 44.4 MB
Events in quadrant A1,563,755337,557
Events in quadrant B1,588,696346,807
Events in quadrant C1,368,768334,456
Events in quadrant D4,039,446187,852

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062706
B0655412
C057448
D01395910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2827170.601344%
B2821411.453385%
C282560.212389%
D2825105737.415929%

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 4865 2833 8 8 0.16% 0.28%
B 4865 2831 18 18 0.37% 0.64%
C 4865 2833 2 2 0.04% 0.07%
D 4865 2831 1028 1028 21.13% 36.31%

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 235203 3510.66 322 317 66.9
A 13 248 23873 352.07 322 317 66.9
A 13 252 17454 256.13 322 317 66.9
B 0 229 197549 3077.58 319 310 64.1
B 0 245 71229 1106.57 319 310 64.1
B 5 255 33280 514.44 319 310 64.1
C 15 214 121730 1642.42 312 313 73.9
C 0 10 12259 161.59 312 313 73.9
C 9 187 6064 77.79 312 313 73.9
D 12 227 3168211 57614.59 217 211 55.0
D 13 249 20380 366.8 217 211 55.0
D 9 19 8904 158.09 217 211 55.0

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