ASTROSAT CZTI

Data Quality Report

Orbit 41827

Creation date: 2024-06-27T22:33:17.965314
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_097T03_9000005706_41827cztM0_level2.fits modeM0/AS1A12_097T03_9000005706_41827cztM0_level2_quad_clean.evt
Size (bytes)356,402,88092,908,800
Size339.9 MB 88.6 MB
Events in quadrant A3,324,031631,658
Events in quadrant B2,714,689639,055
Events in quadrant C3,239,081582,072
Events in quadrant D3,464,899556,253

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134353
B0121162
C0132652
D0142562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5778821.419176%
B5778450.778816%
C57782344.049844%
D57781843.184493%

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 7151 5779 90 90 1.26% 1.56%
B 7151 5779 29 29 0.41% 0.50%
C 7151 5779 218 218 3.05% 3.77%
D 7151 5779 168 168 2.35% 2.91%

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 620309 4809.62 625 613 128.8
A 6 10 256717 1987.69 625 613 128.8
A 15 254 11672 85.83 625 613 128.8
B 4 141 137159 1131.06 620 601 120.7
B 0 245 47271 386.55 620 601 120.7
B 3 112 32658 265.52 620 601 120.7
C 0 10 705866 5137.86 586 588 137.3
C 15 214 226257 1643.97 586 588 137.3
C 0 15 7963 53.73 586 588 137.3
D 13 249 596398 4039.04 602 583 147.5
D 12 79 164785 1113.13 602 583 147.5
D 1 52 113587 766.06 602 583 147.5

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