ASTROSAT CZTI

Data Quality Report

Orbit 24477

Creation date: 2024-06-27T19:06:24.229811
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_183T01_9000003606_24477cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24477cztM0_level2_quad_clean.evt
Size (bytes)439,303,680119,511,360
Size419.0 MB 114.0 MB
Events in quadrant A3,123,096819,578
Events in quadrant B3,192,015844,827
Events in quadrant C3,108,383774,693
Events in quadrant D3,461,197749,669

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132352
B0133222
C0131022
D0144962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6175320.518219%
B6175450.728745%
C6175791.279352%
D6175600.971660%

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 7505 6176 4 4 0.05% 0.06%
B 7505 6176 2 2 0.03% 0.03%
C 7505 6176 18 18 0.24% 0.29%
D 7505 6176 35 35 0.47% 0.57%

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 14 111 61151 383.22 795 780 157.5
A 13 254 10093 59.12 795 780 157.5
A 0 226 6994 39.45 795 780 157.5
B 3 64 28810 188.87 800 782 148.4
B 7 202 24288 158.4 800 782 148.4
B 12 111 17181 110.51 800 782 148.4
C 14 238 122252 705.42 750 758 172.2
C 0 10 57560 329.8 750 758 172.2
C 13 61 5303 26.39 750 758 172.2
D 1 52 287198 1594.72 749 728 179.6
D 8 195 217180 1204.94 749 728 179.6
D 12 218 63486 349.36 749 728 179.6

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