ASTROSAT CZTI

Data Quality Report

Orbit 06507

Creation date: 2024-06-27T15:08:08.168058
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/AS1A02_175T01_9000000874_06507cztM0_level2.evt modeM0/AS1A02_175T01_9000000874_06507cztM0_level2_quad_clean.evt
Size (bytes)736,485,120115,073,280
Size702.4 MB 109.7 MB
Events in quadrant A4,673,838712,159
Events in quadrant B4,709,440717,225
Events in quadrant C4,347,051704,670
Events in quadrant D7,907,419668,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203313
B0206782
C0199782
D0305582

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9854520.527704%
B9854850.862594%
C9854390.395778%
D98543663.714228%

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 10969 9856 0 0 0.00% 0.00%
B 10969 9856 29 29 0.26% 0.29%
C 10969 9856 0 0 0.00% 0.00%
D 10969 9856 181 181 1.65% 1.84%

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 15 267190 1141.27 1143 1117 233.1
A 0 226 10877 41.86 1143 1117 233.1
A 12 194 10673 40.99 1143 1117 233.1
B 0 219 83231 371.24 1146 1117 221.2
B 4 172 69179 307.71 1146 1117 221.2
B 4 48 51823 229.25 1146 1117 221.2
C 4 254 11890 41.96 1105 1112 256.9
C 13 61 8715 29.6 1105 1112 256.9
C 12 4 6695 21.73 1105 1112 256.9
D 2 152 3535561 13220.35 1092 1057 267.4
D 2 14 109374 405.15 1092 1057 267.4
D 13 137 43517 158.82 1092 1057 267.4

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