ASTROSAT CZTI

Data Quality Report

Orbit 35520

Creation date: 2024-06-27T21:14:33.458414
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/AS1A11_097T09_9000005086_35520cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35520cztM0_level2_quad_clean.evt
Size (bytes)232,329,60027,495,360
Size221.6 MB 26.2 MB
Events in quadrant A1,515,072159,545
Events in quadrant B1,829,245159,845
Events in quadrant C1,907,821153,355
Events in quadrant D1,585,164152,236

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062232
B071991
C074831
D066101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A289960.206968%
B28991585.450155%
C2899752.587099%
D2899511.759227%

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 4752 2900 3 3 0.06% 0.10%
B 4752 2900 122 122 2.57% 4.21%
C 4752 2900 47 47 0.99% 1.62%
D 4752 2900 45 45 0.95% 1.55%

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 68804 949.7 351 344 72.1
A 15 169 58248 803.26 351 344 72.1
A 10 255 12088 162.92 351 344 72.1
B 5 200 233480 3469.89 342 333 67.2
B 5 172 227263 3377.36 342 333 67.2
B 5 236 11340 163.81 342 333 67.2
C 0 10 269227 3370.54 340 343 79.8
C 15 214 120499 1506.19 340 343 79.8
C 0 239 105078 1312.88 340 343 79.8
D 13 249 130543 1572.73 339 330 82.8
D 10 199 68086 818.37 339 330 82.8
D 8 195 57716 693.12 339 330 82.8

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