ASTROSAT CZTI

Data Quality Report

Orbit 38456

Creation date: 2024-06-27T21:53:00.292858
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/AS1A12_018T01_9000005386_38456cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38456cztM0_level2_quad_clean.evt
Size (bytes)624,571,200155,134,080
Size595.6 MB 147.9 MB
Events in quadrant A4,972,5761,051,223
Events in quadrant B5,690,4591,055,424
Events in quadrant C4,510,9021,030,981
Events in quadrant D7,203,840896,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206953
B0236702
C0195512
D0281092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9561340.355611%
B95612862.991319%
C9561170.177806%
D95616997.310951%

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 12487 9563 29 29 0.23% 0.30%
B 12487 9563 155 155 1.24% 1.62%
C 12487 9563 9 9 0.07% 0.09%
D 12487 9563 590 590 4.72% 6.17%

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 10 83 585185 2728.34 1061 1039 214.1
A 9 143 179643 834.2 1061 1039 214.1
A 12 189 59313 272.18 1061 1039 214.1
B 5 184 722653 3638.95 1044 1015 198.3
B 0 183 491451 2473.09 1044 1015 198.3
B 4 171 170143 852.85 1044 1015 198.3
C 15 214 393376 1649.63 1026 1032 237.8
C 14 254 42253 173.32 1026 1032 237.8
C 1 23 36378 148.61 1026 1032 237.8
D 10 118 1254465 5163.65 1003 973 242.8
D 13 249 1050790 4324.63 1003 973 242.8
D 12 235 518641 2132.49 1003 973 242.8

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