ASTROSAT CZTI

Data Quality Report

Orbit 39596

Creation date: 2024-06-27T22:06:36.530372
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_018T01_9000005488_39596cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39596cztM0_level2_quad_clean.evt
Size (bytes)473,846,40091,198,080
Size451.9 MB 87.0 MB
Events in quadrant A3,904,589604,934
Events in quadrant B3,685,574626,311
Events in quadrant C5,577,194581,948
Events in quadrant D3,923,661543,558

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153093
B0150242
C0206212
D0158802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57843035.238589%
B57842884.979253%
C57844668.056708%
D57843345.774550%

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 7156 5785 250 250 3.49% 4.32%
B 7156 5785 218 218 3.05% 3.77%
C 7156 5785 442 442 6.18% 7.64%
D 7156 5785 337 337 4.71% 5.83%

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 9 143 760368 6203.23 601 589 122.5
A 10 83 452109 3686.45 601 589 122.5
A 13 248 310584 2530.96 601 589 122.5
B 5 255 809364 6969.59 602 586 116.0
B 5 172 509317 4383.96 602 586 116.0
B 12 111 14421 119.22 602 586 116.0
C 9 187 1716217 12591.84 585 587 136.2
C 15 208 1243651 9123.45 585 587 136.2
C 15 214 251816 1843.89 585 587 136.2
D 13 174 770238 5423.49 584 568 141.9
D 1 47 258645 1818.54 584 568 141.9
D 13 171 225744 1586.7 584 568 141.9

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