ASTROSAT CZTI

Data Quality Report

Orbit 22890

Creation date: 2024-06-27T18:47:09.121000
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_009T01_9000003382_22890cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22890cztM0_level2_quad_clean.evt
Size (bytes)508,800,96090,397,440
Size485.2 MB 86.2 MB
Events in quadrant A3,312,633571,498
Events in quadrant B3,443,396576,490
Events in quadrant C3,310,719551,299
Events in quadrant D4,855,201538,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145881
B0148291
C0146061
D0191811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7182610.849346%
B7182841.169591%
C71821021.420217%
D71831872.603369%

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 7567 7183 1 1 0.01% 0.01%
B 7567 7183 0 0 0.00% 0.00%
C 7567 7183 0 0 0.00% 0.00%
D 7568 7184 122 122 1.61% 1.70%

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 12288 66.59 856 834 172.0
A 3 137 7578 39.21 856 834 172.0
A 0 226 7455 38.49 856 834 172.0
B 3 64 29796 179.26 847 828 161.6
B 0 190 22999 137.2 847 828 161.6
B 12 111 19744 117.06 847 828 161.6
C 14 238 128535 665.3 811 813 192.0
C 7 247 16948 84.05 811 813 192.0
C 13 61 5616 25.02 811 813 192.0
D 7 238 822967 4084.05 823 798 201.3
D 12 233 307299 1522.51 823 798 201.3
D 1 52 176376 872.17 823 798 201.3

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