ASTROSAT CZTI

Data Quality Report

Orbit 08356

Creation date: 2024-06-27T15:31:33.693160
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/AS1G07_046T01_9000001162_08356cztM0_level2.evt modeM0/AS1G07_046T01_9000001162_08356cztM0_level2_quad_clean.evt
Size (bytes)567,731,52077,302,080
Size541.4 MB 73.7 MB
Events in quadrant A4,133,402454,731
Events in quadrant B4,125,470453,315
Events in quadrant C3,693,883453,683
Events in quadrant D4,711,624436,437

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173873
B0172882
C0162922
D0192812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77942773.554016%
B77942383.053631%
C77941832.347960%
D77943864.952528%

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 7929 7796 33 33 0.42% 0.42%
B 7929 7796 6 6 0.08% 0.08%
C 7929 7796 0 0 0.00% 0.00%
D 7929 7796 140 140 1.77% 1.80%

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 15 239 271241 1353.03 971 950 199.8
A 14 111 59666 293.92 971 950 199.8
A 15 223 33991 165.4 971 950 199.8
B 0 214 117206 611.08 975 952 190.2
B 10 16 76713 398.23 975 952 190.2
B 4 173 37842 193.91 975 952 190.2
C 13 61 7292 28.57 947 951 221.9
C 3 202 2258 5.89 947 951 221.9
C -1 -1 -1 -1.0 947 951 221.9
D 13 105 514743 2129.98 933 907 241.2
D 2 152 350928 1450.92 933 907 241.2
D 7 71 90575 371.7 933 907 241.2

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