ASTROSAT CZTI

Data Quality Report

Orbit 26835

Creation date: 2024-06-27T19:33:29.694006
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/AS1A09_145T01_9000003866_26835cztM0_level2.evt modeM0/AS1A09_145T01_9000003866_26835cztM0_level2_quad_clean.evt
Size (bytes)581,454,720123,517,440
Size554.5 MB 117.8 MB
Events in quadrant A4,163,328838,311
Events in quadrant B3,914,643872,191
Events in quadrant C3,609,069813,967
Events in quadrant D5,479,958760,653

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167180
B0157170
C0146350
D0206740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6542340.519719%
B6542981.498013%
C6542901.375726%
D65414346.635071%

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 7877 6543 2 2 0.03% 0.03%
B 7877 6543 17 17 0.22% 0.26%
C 7877 6543 8 8 0.10% 0.12%
D 7876 6542 375 375 4.76% 5.73%

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 0 13 702277 3909.06 898 889 179.4
A 13 254 10739 54.9 898 889 179.4
A 0 226 7687 37.89 898 889 179.4
B 0 189 149447 882.67 901 884 168.3
B 10 246 84482 496.69 901 884 168.3
B 15 33 70398 413.01 901 884 168.3
C 14 238 141761 702.63 862 871 200.5
C 15 208 108432 536.42 862 871 200.5
C 13 61 5947 25.31 862 871 200.5
D 7 80 1917564 9634.0 836 820 199.0
D 2 250 210461 1053.7 836 820 199.0
D 1 52 176190 881.45 836 820 199.0

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