ASTROSAT CZTI

Data Quality Report

Orbit 30885

Creation date: 2024-06-27T20:20:46.648266
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/AS1A10_071T28_9000004464_30885cztM0_level2.evt modeM0/AS1A10_071T28_9000004464_30885cztM0_level2_quad_clean.evt
Size (bytes)555,793,92091,872,000
Size530.0 MB 87.6 MB
Events in quadrant A3,154,534600,824
Events in quadrant B5,461,100595,336
Events in quadrant C3,611,061566,400
Events in quadrant D4,160,556561,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136152
B0207062
C0148662
D0167502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6571400.608735%
B65701301.978691%
C65701692.572298%
D6570480.730594%

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 7626 6571 0 0 0.00% 0.00%
B 7625 6570 30 30 0.39% 0.46%
C 7625 6570 54 54 0.71% 0.82%
D 7625 6570 14 14 0.18% 0.21%

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 13 254 12481 71.13 817 801 164.2
A 3 137 8276 45.52 817 801 164.2
A 0 226 6859 36.89 817 801 164.2
B 6 159 1868524 12047.33 807 785 155.0
B 4 171 138043 885.34 807 785 155.0
B 6 36 136000 872.17 807 785 155.0
C 0 10 348309 1897.49 777 784 183.2
C 14 238 123751 671.4 777 784 183.2
C 3 233 59902 322.78 777 784 183.2
D 8 195 726746 3866.37 786 768 187.8
D 7 238 126231 668.18 786 768 187.8
D 13 243 90003 475.24 786 768 187.8

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