ASTROSAT CZTI

Data Quality Report

Orbit 22693

Creation date: 2024-06-27T18:44:28.442367
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/AS1A08_007T01_9000003362_22693cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22693cztM0_level2_quad_clean.evt
Size (bytes)1,179,982,080226,258,560
Size1.1 GB 215.8 MB
Events in quadrant A7,961,8051,443,430
Events in quadrant B8,438,6211,462,625
Events in quadrant C8,063,2531,400,659
Events in quadrant D10,107,5871,359,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350793
B0359703
C0350623
D0414743

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17220630.365854%
B172211340.778120%
C172211660.963939%
D172213431.991754%

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 18595 17223 0 0 0.00% 0.00%
B 18596 17224 12 12 0.06% 0.07%
C 18596 17224 0 0 0.00% 0.00%
D 18596 17224 215 215 1.16% 1.25%

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 31856 72.32 2059 2011 412.7
A 0 226 17832 38.34 2059 2011 412.7
A 3 137 17090 36.54 2059 2011 412.7
B 0 219 123006 313.26 2056 2006 386.3
B 15 33 65998 165.67 2056 2006 386.3
B 0 190 56270 140.49 2056 2006 386.3
C 14 238 308696 667.66 1976 1987 459.4
C 10 22 25011 50.12 1976 1987 459.4
C 3 233 14905 28.12 1976 1987 459.4
D 1 52 656403 1363.73 1996 1945 479.9
D 7 238 573163 1190.28 1996 1945 479.9
D 12 227 274842 568.65 1996 1945 479.9

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