ASTROSAT CZTI

Data Quality Report

Orbit 20210524_A10_053T23_9000004404_level2

Creation date: 2021-05-27T10:45:29.156412
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/AS1A10_053T23_9000004404cztM0_level2_bc.evt modeM0/AS1A10_053T23_9000004404cztM0_level2_quad_clean.evt
Size (bytes)2,326,752,000658,690,560
Size2.2 GB 628.2 MB
Events in quadrant A11,689,3654,251,111
Events in quadrant B25,430,8094,208,625
Events in quadrant C12,285,3833,991,106
Events in quadrant D17,588,3293,999,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010440
B010440
C010440
D010440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01088140
B01579490
C01137480
D01270960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510128571.679997%
B5101217633.456050%
C5101220574.032385%
D5101216813.295303%

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 59917 51016 6 6 0.01% 0.01%
B 59917 51014 21 21 0.04% 0.04%
C 59917 51013 6 6 0.01% 0.01%
D 59917 51016 228 228 0.38% 0.45%

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 12 96 118127 181.87 2967 2919 633.5
A 8 192 97882 149.91 2967 2919 633.5
A 13 254 87464 133.46 2967 2919 633.5
B 6 159 13388425 24271.17 2936 2869 551.5
B 6 36 673242 1215.54 2936 2869 551.5
B 0 190 43374 73.45 2936 2869 551.5
C 3 233 626429 964.38 2764 2759 646.7
C 0 10 464306 713.69 2764 2759 646.7
C 10 22 220571 336.8 2764 2759 646.7
D 1 52 2112898 3260.0 2892 2808 647.3
D 8 195 1581078 2438.36 2892 2808 647.3
D 5 222 965362 1487.1 2892 2808 647.3

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