ASTROSAT CZTI

Data Quality Report

Orbit 11668

Creation date: 2024-06-27T16:16:50.709286
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/AS1T01_207T01_9000001720_11668cztM0_level2.evt modeM0/AS1T01_207T01_9000001720_11668cztM0_level2_quad_clean.evt
Size (bytes)517,196,16072,921,600
Size493.2 MB 69.5 MB
Events in quadrant A4,154,862439,968
Events in quadrant B4,055,349439,313
Events in quadrant C3,128,434442,255
Events in quadrant D3,876,098425,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165983
B0160742
C0136762
D0159902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66132423.659459%
B66132734.128232%
C66131071.618025%
D66131993.009224%

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 7534 6615 40 40 0.53% 0.60%
B 7534 6615 86 86 1.14% 1.30%
C 7534 6615 0 0 0.00% 0.00%
D 7534 6615 74 74 0.98% 1.12%

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 8 5 600246 3654.81 811 793 164.0
A 1 162 165728 1005.59 811 793 164.0
A 1 178 91682 554.14 811 793 164.0
B 4 239 625327 4045.4 810 787 154.4
B 0 214 81127 520.39 810 787 154.4
B 15 204 78870 505.77 810 787 154.4
C 13 61 5879 27.69 801 804 183.3
C 12 4 2228 7.77 801 804 183.3
C 14 234 2023 6.65 801 804 183.3
D 13 104 411294 2191.67 793 772 187.3
D 1 52 133455 708.36 793 772 187.3
D 10 253 120731 640.43 793 772 187.3

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