ASTROSAT CZTI

Data Quality Report

Orbit 33745

Creation date: 2024-06-27T20:52:10.716107
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/AS1A11_037T01_9000004818_33745cztM0_level2.evt modeM0/AS1A11_037T01_9000004818_33745cztM0_level2_quad_clean.evt
Size (bytes)133,292,16015,223,680
Size127.1 MB 14.5 MB
Events in quadrant A934,14790,382
Events in quadrant B909,04495,859
Events in quadrant C752,19193,602
Events in quadrant D1,355,55187,920

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035592
B035191
C030031
D049161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1223826.704824%
B1223927.522486%
C1223362.943581%
D1223544.415372%

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 2954 1224 84 84 2.84% 6.86%
B 2953 1222 46 46 1.56% 3.76%
C 2954 1224 31 31 1.05% 2.53%
D 2954 1224 41 41 1.39% 3.35%

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 14 4 331119 10822.69 142 139 30.6
A 15 237 47932 1562.78 142 139 30.6
A 10 83 4101 129.55 142 139 30.6
B 5 172 148195 5104.0 142 139 29.0
B 0 189 55228 1899.11 142 139 29.0
B 0 229 51661 1776.14 142 139 29.0
C 0 10 103933 3066.23 140 141 33.9
C 15 214 56437 1663.1 140 141 33.9
C 9 187 23364 686.06 140 141 33.9
D 8 195 601557 15677.7 137 133 38.4
D 12 233 69036 1796.14 137 133 38.4
D 12 6 36440 946.44 137 133 38.4

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