ASTROSAT CZTI

Data Quality Report

Orbit 17220

Creation date: 2024-06-27T17:33:44.420680
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_185T04_9000002548_17220cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17220cztM0_level2_quad_clean.evt
Size (bytes)421,188,48096,586,560
Size401.7 MB 92.1 MB
Events in quadrant A2,846,972643,654
Events in quadrant B2,965,039642,751
Events in quadrant C3,066,762607,544
Events in quadrant D3,462,202605,320

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125621
B0128181
C0130191
D0142231

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6093370.607254%
B6093450.738552%
C6093560.919087%
D6094861.411224%

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 7163 6094 0 0 0.00% 0.00%
B 7163 6094 3 3 0.04% 0.05%
C 7163 6094 1 1 0.01% 0.02%
D 7164 6095 41 41 0.57% 0.67%

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 0 226 6594 39.04 740 726 150.3
A 12 194 5565 32.19 740 726 150.3
A 3 137 5191 29.7 740 726 150.3
B 4 216 29706 207.21 729 711 139.9
B 0 219 29005 202.2 729 711 139.9
B 7 220 17023 116.57 729 711 139.9
C 3 233 232420 1426.27 699 703 162.5
C 14 238 108194 661.63 699 703 162.5
C 13 61 4984 26.35 699 703 162.5
D 1 52 233740 1339.26 717 696 174.0
D 5 222 227200 1301.68 717 696 174.0
D 10 70 111607 637.39 717 696 174.0

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