ASTROSAT CZTI

Data Quality Report

Orbit 10042

Creation date: 2024-06-27T15:54:08.206852
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/AS1A03_052T01_9000001436_10042cztM0_level2.evt modeM0/AS1A03_052T01_9000001436_10042cztM0_level2_quad_clean.evt
Size (bytes)1,284,940,800257,673,600
Size1.2 GB 245.7 MB
Events in quadrant A9,343,9811,651,796
Events in quadrant B9,145,2371,676,616
Events in quadrant C8,535,9931,626,142
Events in quadrant D10,617,2781,554,252

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03840
B03840
C03842
D03840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03985324
B03950546
C03848531
D04372238

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188152581.371246%
B188042401.276324%
C188111710.909043%
D188124612.450563%

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 22424 18823 11 11 0.05% 0.06%
B 22424 18822 4 4 0.02% 0.02%
C 22424 18824 0 0 0.00% 0.00%
D 22424 18824 247 247 1.10% 1.31%

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 442859 965.56 2264 2215 456.4
A 15 174 124714 268.43 2264 2215 456.4
A 13 251 32489 66.34 2264 2215 456.4
B 0 214 133529 303.37 2262 2210 432.9
B 4 239 73340 164.32 2262 2210 432.9
B 12 111 47300 104.17 2262 2210 432.9
C 14 67 25746 46.66 2180 2190 504.8
C 13 61 16376 28.1 2180 2190 504.8
C 8 222 14006 23.41 2180 2190 504.8
D 12 233 554559 1013.99 2159 2101 544.8
D 1 52 442208 807.78 2159 2101 544.8
D 2 152 410127 748.9 2159 2101 544.8

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