ASTROSAT CZTI

Data Quality Report

Orbit 00914

Creation date: 2024-06-27T14:04:38.659710
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/AS1P01_161T02_9000000184_00914cztM0_level2.evt modeM0/AS1P01_161T02_9000000184_00914cztM0_level2_quad_clean.evt
Size (bytes)1,086,387,84080,985,600
Size1.0 GB 77.2 MB
Events in quadrant A7,724,893505,306
Events in quadrant B8,566,100501,315
Events in quadrant C8,075,365495,875
Events in quadrant D8,090,867482,767

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277290
B0301780
C0287200
D0288170

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A670150.074616%
B6702670.999702%
C670270.104446%
D67021041.551776%

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 7601 6702 185 185 2.43% 2.76%
B 7602 6703 415 415 5.46% 6.19%
C 7602 6703 227 227 2.99% 3.39%
D 7602 6703 430 430 5.66% 6.42%

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 15 127 72561 148.71 1990 2001 474.5
A 14 170 15467 28.38 1990 2001 474.5
A 11 79 8677 14.07 1990 2001 474.5
B 3 0 422173 860.71 2098 2106 488.0
B 8 234 31993 61.24 2098 2106 488.0
B 7 221 28916 54.93 2098 2106 488.0
C 15 241 382352 707.72 1941 2014 537.4
C 3 111 25305 43.34 1941 2014 537.4
C 9 83 24094 41.09 1941 2014 537.4
D 12 188 535848 935.2 1858 1923 570.9
D 1 4 266759 463.88 1858 1923 570.9
D 2 170 232333 403.58 1858 1923 570.9

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