ASTROSAT CZTI

Data Quality Report

Orbit 17471

Creation date: 2024-06-27T17:36:55.997664
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_196T01_9000002584_17471cztM0_level2.evt modeM0/AS1A05_196T01_9000002584_17471cztM0_level2_quad_clean.evt
Size (bytes)639,008,64067,426,560
Size609.4 MB 64.3 MB
Events in quadrant A3,781,944413,334
Events in quadrant B3,853,313414,662
Events in quadrant C3,612,246393,884
Events in quadrant D7,657,710358,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152292
B0155382
C0147622
D0272934

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66082093.162833%
B66081291.952179%
C66081392.103511%
D6607141521.416679%

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 7943 6608 94 94 1.18% 1.42%
B 7943 6609 18 18 0.23% 0.27%
C 7943 6608 0 0 0.00% 0.00%
D 7942 6607 1154 1154 14.53% 17.47%

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 0 23 219954 1205.58 915 899 181.7
A 15 174 26619 141.55 915 899 181.7
A 0 226 24448 129.6 915 899 181.7
B 7 220 83583 492.35 909 891 168.0
B 10 16 60143 352.79 909 891 168.0
B 0 189 44221 257.99 909 891 168.0
C 14 238 139430 693.87 875 884 199.7
C 5 218 36494 178.34 875 884 199.7
C 3 233 12926 60.31 875 884 199.7
D 11 176 3317771 16510.51 831 807 200.9
D 10 70 958524 4767.13 831 807 200.9
D 13 189 116882 577.77 831 807 200.9

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