ASTROSAT CZTI

Data Quality Report

Orbit 17659

Creation date: 2024-06-27T17:39:13.749870
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/AS1A05_118T02_9000002612_17659cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17659cztM0_level2_quad_clean.evt
Size (bytes)530,752,32094,665,600
Size506.2 MB 90.3 MB
Events in quadrant A3,192,087623,291
Events in quadrant B3,262,457633,428
Events in quadrant C3,669,650599,759
Events in quadrant D5,515,824564,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132392
B0134862
C0148582
D0205922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6394310.484830%
B6394480.750704%
C6394781.219894%
D639492214.419769%

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 7699 6395 0 0 0.00% 0.00%
B 7699 6395 4 4 0.05% 0.06%
C 7699 6395 0 0 0.00% 0.00%
D 7699 6395 652 652 8.47% 10.20%

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 14 237 15479 88.7 827 811 165.4
A 0 226 7404 39.87 827 811 165.4
A 12 194 6072 31.82 827 811 165.4
B 0 230 54357 345.19 818 798 155.2
B 12 111 17728 109.11 818 798 155.2
B 11 111 15774 96.52 818 798 155.2
C 3 233 489773 2698.05 782 789 181.2
C 14 238 123837 678.94 782 789 181.2
C 13 61 5465 25.8 782 789 181.2
D 1 52 1918799 10844.16 732 712 176.9
D 7 238 745775 4212.31 732 712 176.9
D 13 189 54988 306.86 732 712 176.9

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