ASTROSAT CZTI

Data Quality Report

Orbit 28962

Creation date: 2024-06-27T19:58:33.641479
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/AS1A10_048T03_9000004154_28962cztM0_level2.evt modeM0/AS1A10_048T03_9000004154_28962cztM0_level2_quad_clean.evt
Size (bytes)1,934,447,040327,003,840
Size1.8 GB 311.9 MB
Events in quadrant A12,206,3072,086,050
Events in quadrant B13,347,8672,135,103
Events in quadrant C12,088,2602,049,854
Events in quadrant D19,321,9921,979,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0521115
B0552005
C0510735
D0740155

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240314281.781033%
B240317863.270775%
C240316472.692356%
D2403110664.435937%

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 28639 24039 154 154 0.54% 0.64%
B 28639 24039 388 388 1.35% 1.61%
C 28639 24039 0 0 0.00% 0.00%
D 28639 24039 677 677 2.36% 2.82%

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 12 96 614280 1023.26 2986 2924 597.5
A 13 254 43628 68.13 2986 2924 597.5
A 15 192 33540 51.24 2986 2924 597.5
B 10 245 1457255 2564.8 2960 2882 567.1
B 0 229 178351 309.44 2960 2882 567.1
B 12 111 70091 118.52 2960 2882 567.1
C 14 238 567963 841.2 2877 2894 671.7
C 14 254 156750 229.04 2877 2894 671.7
C 3 233 88792 127.87 2877 2894 671.7
D 8 195 4298576 6323.31 2869 2799 679.4
D 1 52 2583778 3799.16 2869 2799 679.4
D 5 233 902119 1323.78 2869 2799 679.4

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