ASTROSAT CZTI

Data Quality Report

Orbit 14306

Creation date: 2024-06-27T16:53:16.751926
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/AS1A04_130T03_9000002108_14306cztM0_level2.evt modeM0/AS1A04_130T03_9000002108_14306cztM0_level2_quad_clean.evt
Size (bytes)1,922,549,760303,779,520
Size1.8 GB 289.7 MB
Events in quadrant A13,138,5741,912,115
Events in quadrant B14,686,6711,893,847
Events in quadrant C13,647,0181,841,203
Events in quadrant D15,053,9101,821,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05160
B05160
C05160
D05160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0541825
B0592805
C0543685
D0612015

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251646912.745986%
B2516411134.422985%
C251644271.696869%
D251647112.825465%

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 30562 25168 40 40 0.13% 0.16%
B 30562 25168 261 261 0.85% 1.04%
C 30562 25169 0 0 0.00% 0.00%
D 30562 25169 204 204 0.67% 0.81%

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 13 210 294319 453.29 3179 3105 642.4
A 8 15 291259 448.53 3179 3105 642.4
A 12 189 269204 414.2 3179 3105 642.4
B 0 229 1100007 1835.36 3129 3049 597.7
B 10 16 520629 865.98 3129 3049 597.7
B 10 245 303467 502.64 3129 3049 597.7
C 3 233 1699450 2414.96 3059 3078 702.4
C 13 61 22207 27.23 3059 3078 702.4
C 10 22 14361 16.06 3059 3078 702.4
D 5 222 1262150 1734.57 3077 3010 725.9
D 12 110 1048622 1440.42 3077 3010 725.9
D 13 122 405092 553.9 3077 3010 725.9

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