ASTROSAT CZTI

Data Quality Report

Orbit 20210711_T04_024T01_9000004530_level2

Creation date: 2021-07-13T10:12:20.380800
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/AS1T04_024T01_9000004530cztM0_level2_bc.evt modeM0/AS1T04_024T01_9000004530cztM0_level2_quad_clean.evt
Size (bytes)4,841,657,2801,423,941,120
Size4.5 GB 1.3 GB
Events in quadrant A23,435,3679,309,526
Events in quadrant B53,272,4689,163,183
Events in quadrant C29,299,7578,646,244
Events in quadrant D33,489,0338,816,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02203800
B03244120
C02542580
D02526700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021400
B021400
C021400
D021400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01930
B01930
C01930
D01930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10498711241.070609%
B10498727342.604132%
C10498749094.675817%
D10498719941.899283%

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 124332 104989 0 0 0.00% 0.00%
B 124332 104988 6 6 0.00% 0.01%
C 124332 104979 17 17 0.01% 0.02%
D 124332 104988 73 73 0.06% 0.07%

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 13 254 189178 141.55 6073 5996 1294.1
A 0 226 38102 24.81 6073 5996 1294.1
A 12 194 36337 23.44 6073 5996 1294.1
B 6 159 27597712 24544.43 6014 5894 1124.2
B 4 80 1582076 1402.1 6014 5894 1124.2
B 10 245 425062 372.87 6014 5894 1124.2
C 3 233 5599087 4272.37 5618 5617 1309.2
C 0 10 1255012 954.31 5618 5617 1309.2
C 14 254 272775 204.06 5618 5617 1309.2
D 8 195 7536557 5404.53 5835 5708 1393.4
D 12 233 1466350 1048.23 5835 5708 1393.4
D 2 250 1109608 792.22 5835 5708 1393.4

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