ASTROSAT CZTI

Data Quality Report

Orbit 16664

Creation date: 2024-06-27T17:25:52.058377
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_078T01_9000002462_16664cztM0_level2.evt modeM0/AS1A05_078T01_9000002462_16664cztM0_level2_quad_clean.evt
Size (bytes)626,719,680146,125,440
Size597.7 MB 139.4 MB
Events in quadrant A3,976,076984,405
Events in quadrant B4,523,8061,001,428
Events in quadrant C3,652,602958,601
Events in quadrant D6,280,516920,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174123
B0188312
C0164372
D0242832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80631021.265038%
B80631792.220017%
C80631041.289842%
D80634605.705073%

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 8919 8066 22 22 0.25% 0.27%
B 8919 8066 22 22 0.25% 0.27%
C 8919 8066 0 0 0.00% 0.00%
D 8919 8066 424 424 4.75% 5.26%

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 15 174 329969 1756.71 929 906 187.3
A 9 143 43911 229.58 929 906 187.3
A 12 96 14897 74.69 929 906 187.3
B 15 35 381723 2161.13 935 910 176.2
B 0 229 161977 914.06 935 910 176.2
B 4 216 59241 331.03 935 910 176.2
C 14 238 138131 658.98 892 894 208.3
C 3 233 19716 90.38 892 894 208.3
C 7 247 10006 43.75 892 894 208.3
D 1 52 2524523 11771.88 885 855 214.4
D 15 0 278058 1293.04 885 855 214.4
D 13 248 42528 194.39 885 855 214.4

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