ASTROSAT CZTI

Data Quality Report

Orbit 04805

Creation date: 2024-06-27T14:47:14.345343
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/AS1G05_002T03_9000000608_04805cztM0_level2.evt modeM0/AS1G05_002T03_9000000608_04805cztM0_level2_quad_clean.evt
Size (bytes)456,068,16079,021,440
Size434.9 MB 75.4 MB
Events in quadrant A3,347,418493,880
Events in quadrant B3,377,366497,312
Events in quadrant C2,906,998498,010
Events in quadrant D3,763,121474,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138392
B0140861
C0128471
D0153821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61431873.044115%
B61431161.888328%
C6143671.090672%
D61432714.411525%

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 7383 6143 82 82 1.11% 1.33%
B 7383 6143 9 9 0.12% 0.15%
C 7383 6144 3 3 0.04% 0.05%
D 7383 6144 160 160 2.17% 2.60%

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 50 263512 1717.89 751 737 153.0
A 13 251 151036 982.58 751 737 153.0
A 8 15 31840 203.33 751 737 153.0
B 15 204 240250 1641.26 760 745 145.9
B 8 3 66807 452.71 760 745 145.9
B 10 16 66343 449.53 760 745 145.9
C 12 4 86283 513.56 723 727 166.6
C 13 61 6167 32.65 723 727 166.6
C 3 202 1863 6.82 723 727 166.6
D 13 235 679847 3935.12 716 696 172.6
D 2 136 209520 1209.96 716 696 172.6
D 2 234 73028 419.1 716 696 172.6

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