ASTROSAT CZTI

Data Quality Report

Orbit 16697

Creation date: 2024-06-27T17:26:21.906759
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/AS1T03_024T01_9000002472_16697cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16697cztM0_level2_quad_clean.evt
Size (bytes)2,004,540,480241,712,640
Size1.9 GB 230.5 MB
Events in quadrant A15,024,4401,586,234
Events in quadrant B9,601,4051,675,077
Events in quadrant C9,030,1811,614,569
Events in quadrant D25,789,2281,151,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0568945
B0400824
C0384684
D0893984

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18744199510.643406%
B187442251.200384%
C187442311.232394%
D18744710637.910798%

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 20490 18749 1377 1377 6.72% 7.34%
B 20490 18749 10 10 0.05% 0.05%
C 20490 18749 0 0 0.00% 0.00%
D 20490 18748 5351 5351 26.12% 28.54%

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 15 174 6194684 13797.56 2209 2163 448.8
A 12 96 240428 530.88 2209 2163 448.8
A 9 143 66829 144.08 2209 2163 448.8
B 15 35 288183 648.6 2301 2246 440.9
B 0 229 107544 238.85 2301 2246 440.9
B 4 216 71324 156.69 2301 2246 440.9
C 14 238 338831 650.46 2207 2227 517.5
C 3 233 75553 141.7 2207 2227 517.5
C 7 247 19074 32.56 2207 2227 517.5
D 1 52 15654979 38892.85 1651 1606 402.5
D 2 16 3163444 7856.0 1651 1606 402.5
D 5 222 473217 1171.78 1651 1606 402.5

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