ASTROSAT CZTI

Data Quality Report

Orbit 23342

Creation date: 2024-06-27T18:53:02.944094
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/AS1A07_135T02_9000003450_23342cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23342cztM0_level2_quad_clean.evt
Size (bytes)1,228,305,600237,355,200
Size1.1 GB 226.4 MB
Events in quadrant A8,304,4651,498,650
Events in quadrant B8,505,8661,530,193
Events in quadrant C8,654,5761,485,819
Events in quadrant D10,529,4191,446,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364443
B0369003
C0368423
D0438573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17812700.392993%
B178131100.617527%
C178131861.044181%
D178134642.604839%

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 20172 17814 0 0 0.00% 0.00%
B 20173 17816 6 6 0.03% 0.03%
C 20173 17814 1 1 0.00% 0.01%
D 20173 17816 384 384 1.90% 2.16%

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 6 16 25608 54.44 2148 2098 431.9
A 13 254 25011 53.05 2148 2098 431.9
A 3 137 19369 39.99 2148 2098 431.9
B 0 190 63943 152.65 2137 2084 405.2
B 12 111 50725 120.03 2137 2084 405.2
B 11 111 45549 107.26 2137 2084 405.2
C 14 238 326280 672.41 2065 2081 482.1
C 10 9 198599 407.59 2065 2081 482.1
C 7 247 44792 88.59 2065 2081 482.1
D 1 52 1878879 3766.37 2070 2015 498.3
D 2 152 288115 574.13 2070 2015 498.3
D 12 233 160072 317.18 2070 2015 498.3

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