ASTROSAT CZTI

Data Quality Report

Orbit 17517

Creation date: 2024-06-27T17:37:32.711806
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/AS1A05_140T01_9000002596_17517cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17517cztM0_level2_quad_clean.evt
Size (bytes)483,321,60083,214,720
Size460.9 MB 79.4 MB
Events in quadrant A3,326,763525,304
Events in quadrant B3,266,436526,754
Events in quadrant C3,283,789501,360
Events in quadrant D4,300,088494,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142871
B0139431
C0139881
D0172371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67761402.066116%
B67761021.505313%
C67761031.520071%
D67762824.161747%

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 7466 6776 37 37 0.50% 0.55%
B 7466 6777 1 1 0.01% 0.01%
C 7466 6777 0 0 0.00% 0.00%
D 7466 6777 165 165 2.21% 2.43%

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 4 208 95681 567.9 831 813 167.1
A 15 174 35439 207.28 831 813 167.1
A 0 226 7209 38.29 831 813 167.1
B 12 111 18786 113.48 829 809 158.4
B 11 111 16253 97.49 829 809 158.4
B 0 219 16199 97.15 829 809 158.4
C 14 238 122369 654.74 793 797 185.7
C 3 233 50502 267.69 793 797 185.7
C 5 218 13409 67.92 793 797 185.7
D 5 222 926393 4785.18 796 774 193.4
D 13 189 185533 955.15 796 774 193.4
D 7 38 65936 336.87 796 774 193.4

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