ASTROSAT CZTI

Data Quality Report

Orbit 04843

Creation date: 2024-06-27T14:47:48.308330
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/AS1G05_253T02_9000000614_04843cztM0_level2.evt modeM0/AS1G05_253T02_9000000614_04843cztM0_level2_quad_clean.evt
Size (bytes)1,584,866,880242,029,440
Size1.5 GB 230.8 MB
Events in quadrant A10,853,7961,441,713
Events in quadrant B11,767,2591,437,953
Events in quadrant C10,979,5341,456,449
Events in quadrant D12,814,6331,382,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04786
B04782
C04780
D04780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049024151
B050942188
C049786152
D055153243

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234114702.007603%
B233973561.521563%
C234111870.798770%
D233966992.987690%

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 26036 23482 45 45 0.17% 0.19%
B 26036 23479 69 69 0.27% 0.29%
C 26036 23477 1 1 0.00% 0.00%
D 26036 23475 368 368 1.41% 1.57%

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 217297 390.44 2674 2610 549.9
A 14 111 200003 358.99 2674 2610 549.9
A 0 50 119773 213.08 2674 2610 549.9
B 8 3 550159 1054.63 2707 2642 519.2
B 10 16 210890 401.13 2707 2642 519.2
B 4 80 205932 391.58 2707 2642 519.2
C 8 208 718477 1179.83 2606 2612 606.8
C 1 16 33654 51.16 2606 2612 606.8
C 8 128 30460 45.9 2606 2612 606.8
D 13 235 990383 1569.44 2574 2492 629.5
D 2 234 800957 1268.5 2574 2492 629.5
D 2 136 408622 645.21 2574 2492 629.5

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