ASTROSAT CZTI

Data Quality Report

Orbit 23394

Creation date: 2024-06-27T18:53:47.149182
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/AS1A07_127T02_9000003460_23394cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23394cztM0_level2_quad_clean.evt
Size (bytes)213,632,64048,755,520
Size203.7 MB 46.5 MB
Events in quadrant A1,447,910325,873
Events in quadrant B1,508,799328,328
Events in quadrant C1,525,845313,276
Events in quadrant D1,794,282307,727

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060181
B062082
C061971
D072421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2820602.127660%
B2819702.483150%
C2819822.908833%
D28191535.427457%

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 3475 2821 0 0 0.00% 0.00%
B 3474 2819 6 6 0.17% 0.21%
C 3474 2820 0 0 0.00% 0.00%
D 3474 2819 88 88 2.53% 3.12%

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 6 16 4298 50.72 374 366 77.5
A 13 254 3907 45.67 374 366 77.5
A 3 137 3467 40.0 374 366 77.5
B 0 189 56632 765.55 368 358 73.5
B 0 190 9279 121.36 368 358 73.5
B 12 111 8809 114.97 368 358 73.5
C 10 9 84010 982.57 355 357 85.1
C 14 238 54533 636.34 355 357 85.1
C 13 61 2370 23.64 355 357 85.1
D 1 52 423917 4735.01 361 350 89.5
D 2 234 11870 128.78 361 350 89.5
D 14 226 3555 35.83 361 350 89.5

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