ASTROSAT CZTI

Data Quality Report

Orbit 17939

Creation date: 2024-06-27T17:42:52.828256
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/AS1T03_025T01_9000002670_17939cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17939cztM0_level2_quad_clean.evt
Size (bytes)534,263,040120,611,520
Size509.5 MB 115.0 MB
Events in quadrant A3,484,956787,575
Events in quadrant B3,558,947810,584
Events in quadrant C3,580,742775,356
Events in quadrant D5,030,231741,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159122
B0159382
C0159522
D0202902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7739420.542706%
B7739690.891588%
C7739680.878666%
D77393194.121980%

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 8429 7741 0 0 0.00% 0.00%
B 8429 7741 0 0 0.00% 0.00%
C 8429 7741 0 0 0.00% 0.00%
D 8429 7741 283 283 3.36% 3.66%

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 45357 245.43 895 874 181.2
A 0 226 7583 37.02 895 874 181.2
A 3 137 7020 33.91 895 874 181.2
B 12 111 21193 117.03 905 880 173.6
B 11 111 18393 100.9 905 880 173.6
B 14 111 15152 82.23 905 880 173.6
C 14 238 133577 650.94 866 870 203.9
C 9 160 21709 102.22 866 870 203.9
C 9 176 17130 79.76 866 870 203.9
D 7 238 1342693 6420.03 858 831 209.0
D 5 222 294858 1406.75 858 831 209.0
D 10 70 55352 260.85 858 831 209.0

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