ASTROSAT CZTI

Data Quality Report

Orbit 18637

Creation date: 2024-06-27T17:52:48.416337
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/AS1C04_001T01_9000002784_18637cztM0_level2.evt modeM0/AS1C04_001T01_9000002784_18637cztM0_level2_quad_clean.evt
Size (bytes)827,959,680163,123,200
Size789.6 MB 155.6 MB
Events in quadrant A4,880,0371,093,113
Events in quadrant B8,740,2741,033,396
Events in quadrant C4,647,8481,089,754
Events in quadrant D6,139,1731,040,026

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210002
B0324912
C0200772
D0248542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98691411.428716%
B9870132913.465046%
C9870680.688956%
D98704744.802432%

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 11334 9871 73 73 0.64% 0.74%
B 11335 9871 962 962 8.49% 9.75%
C 11335 9872 1 1 0.01% 0.01%
D 11335 9872 416 416 3.67% 4.21%

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 6 16 307795 1294.04 1163 1134 237.0
A 9 143 38321 156.92 1163 1134 237.0
A 4 2 33924 138.36 1163 1134 237.0
B 10 245 4318268 20746.29 1099 1071 208.1
B 0 197 36201 168.82 1099 1071 208.1
B 12 111 25947 119.54 1099 1071 208.1
C 14 238 175061 661.26 1129 1137 263.0
C 9 54 39271 144.99 1129 1137 263.0
C 3 233 14783 51.88 1129 1137 263.0
D 1 52 824186 3039.86 1116 1080 270.8
D 7 223 580932 2141.49 1116 1080 270.8
D 7 238 436770 1609.07 1116 1080 270.8

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