ASTROSAT CZTI

Data Quality Report

Orbit 41893

Creation date: 2024-06-27T22:34:04.770898
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/AS1A12_099T01_9000005716_41893cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41893cztM0_level2_quad_clean.evt
Size (bytes)388,981,44091,028,160
Size371.0 MB 86.8 MB
Events in quadrant A4,013,473615,349
Events in quadrant B3,032,154637,471
Events in quadrant C3,236,262584,829
Events in quadrant D3,705,512548,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153512
B0124452
C0126322
D0145482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52881653.120272%
B52881953.687595%
C52882765.219365%
D52882384.500756%

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 7230 5289 144 144 1.99% 2.72%
B 7230 5289 133 133 1.84% 2.51%
C 7230 5289 261 261 3.61% 4.93%
D 7230 5289 204 204 2.82% 3.86%

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 14 24 1156111 9558.6 595 583 120.9
A 10 83 526142 4347.46 595 583 120.9
A 2 79 16191 129.11 595 583 120.9
B 5 255 616076 5384.0 595 580 114.3
B 7 202 36343 312.83 595 580 114.3
B 0 190 34157 293.71 595 580 114.3
C 0 10 768948 5702.79 576 580 134.7
C 15 214 207922 1538.88 576 580 134.7
C 14 254 9265 64.46 576 580 134.7
D 5 222 442852 3148.17 579 564 140.5
D 13 249 436565 3103.42 579 564 140.5
D 12 6 239123 1698.04 579 564 140.5

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