ASTROSAT CZTI

Data Quality Report

Orbit 11469

Creation date: 2024-06-27T16:13:23.290744
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/AS1G08_032T01_9000001680_11469cztM0_level2.evt modeM0/AS1G08_032T01_9000001680_11469cztM0_level2_quad_clean.evt
Size (bytes)636,549,12095,855,040
Size607.1 MB 91.4 MB
Events in quadrant A3,808,431602,321
Events in quadrant B6,007,695578,600
Events in quadrant C3,682,768600,474
Events in quadrant D5,235,710563,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167823
B0232052
C0166432
D0210742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80171391.733816%
B80177299.093177%
C8017770.960459%
D80173504.365723%

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 8403 8021 0 0 0.00% 0.00%
B 8403 8021 284 284 3.38% 3.54%
C 8403 8021 2 2 0.02% 0.02%
D 8403 8021 177 177 2.11% 2.21%

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 9 143 19257 92.75 959 934 197.5
A 1 162 18248 87.64 959 934 197.5
A 15 174 15627 74.38 959 934 197.5
B 4 239 967401 5387.9 931 907 179.4
B 3 64 908855 5061.52 931 907 179.4
B 15 204 269622 1498.0 931 907 179.4
C 12 4 14279 60.84 941 946 219.1
C 13 61 6970 27.49 941 946 219.1
C 14 234 3130 9.97 941 946 219.1
D 1 52 894558 3998.19 920 892 223.5
D 10 253 192784 858.51 920 892 223.5
D 8 195 166686 741.75 920 892 223.5

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