ASTROSAT CZTI

Data Quality Report

Orbit 20197

Creation date: 2024-06-27T18:12:20.264355
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/AS1C04_001T01_9000002994_20197cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20197cztM0_level2_quad_clean.evt
Size (bytes)122,166,72030,936,960
Size116.5 MB 29.5 MB
Events in quadrant A789,673210,458
Events in quadrant B856,688208,490
Events in quadrant C766,004199,339
Events in quadrant D1,172,010196,254

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034270
B036070
C033190
D045530

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1654120.725514%
B165530.181269%
C165580.483384%
D1655462.779456%

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 1654 1654 9 9 0.54% 0.54%
B 1655 1655 1 1 0.06% 0.06%
C 1655 1655 0 0 0.00% 0.00%
D 1655 1655 33 33 1.99% 1.99%

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 14 111 34145 819.26 194 190 41.4
A 4 2 5231 121.63 194 190 41.4
A 0 226 1745 37.52 194 190 41.4
B 0 197 40401 1064.98 191 186 37.8
B 4 216 16909 442.86 191 186 37.8
B 4 171 14861 388.63 191 186 37.8
C 14 238 29256 648.72 186 186 44.8
C 3 233 5581 120.39 186 186 44.8
C 1 16 3632 76.9 186 186 44.8
D 7 38 224207 4689.53 190 184 47.8
D 11 176 56112 1170.76 190 184 47.8
D 9 1 49646 1035.4 190 184 47.8

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