ASTROSAT CZTI

Data Quality Report

Orbit 17835

Creation date: 2024-06-27T17:41:34.961446
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_025T04_9000002652_17835cztM0_level2.evt modeM0/AS1A05_025T04_9000002652_17835cztM0_level2_quad_clean.evt
Size (bytes)463,504,32087,255,360
Size442.0 MB 83.2 MB
Events in quadrant A3,112,941552,209
Events in quadrant B3,289,111560,056
Events in quadrant C3,425,516537,871
Events in quadrant D3,751,049521,630

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137362
B0139992
C0139052
D0158832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6753310.459055%
B6753670.992152%
C6753691.021768%
D67531231.821413%

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 7628 6755 1 1 0.01% 0.01%
B 7628 6755 8 8 0.10% 0.12%
C 7628 6755 0 0 0.00% 0.00%
D 7628 6755 81 81 1.06% 1.20%

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 15 174 7188 39.28 808 791 162.9
A 0 226 6955 37.85 808 791 162.9
A 3 137 6181 33.1 808 791 162.9
B 10 245 48375 308.56 813 791 154.2
B 15 222 25733 161.74 813 791 154.2
B 12 111 18589 115.41 813 791 154.2
C 13 62 213166 1165.29 784 791 182.3
C 14 238 122036 665.27 784 791 182.3
C 5 218 26028 138.47 784 791 182.3
D 7 238 717942 3743.39 783 761 191.6
D 1 52 27427 139.19 783 761 191.6
D 2 234 26286 133.23 783 761 191.6

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