ASTROSAT CZTI

Data Quality Report

Orbit 26440

Creation date: 2024-06-27T19:29:02.618238
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/AS1A09_108T02_9000003822_26440cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26440cztM0_level2_quad_clean.evt
Size (bytes)238,852,80029,479,680
Size227.8 MB 28.1 MB
Events in quadrant A1,672,399165,870
Events in quadrant B1,672,699168,121
Events in quadrant C1,841,931157,325
Events in quadrant D1,812,395158,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070750
B070180
C075470
D075770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3416120.351288%
B341640.117096%
C3416451.317330%
D3416250.731850%

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 3416 3416 4 4 0.12% 0.12%
B 3416 3416 0 0 0.00% 0.00%
C 3416 3416 17 17 0.50% 0.50%
D 3416 3416 20 20 0.59% 0.59%

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 0 13 52524 613.8 419 410 84.9
A 13 254 5144 55.76 419 410 84.9
A 12 189 4271 45.48 419 410 84.9
B 0 190 25102 304.44 413 402 81.1
B 0 229 18121 218.4 413 402 81.1
B 12 111 9897 117.03 413 402 81.1
C 4 254 124118 1329.61 394 396 93.1
C 14 176 85409 913.62 394 396 93.1
C 14 238 64431 688.17 394 396 93.1
D 11 176 104645 1062.36 404 395 98.1
D 1 52 88770 900.58 404 395 98.1
D 14 35 32374 325.88 404 395 98.1

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