ASTROSAT CZTI

Data Quality Report

Orbit 06815

Creation date: 2024-06-27T15:11:58.201558
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/AS1G06_086T02_9000000936_06815cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06815cztM0_level2_quad_clean.evt
Size (bytes)2,657,865,600429,071,040
Size2.5 GB 409.2 MB
Events in quadrant A18,642,6372,604,236
Events in quadrant B19,599,7742,649,535
Events in quadrant C18,132,2482,596,649
Events in quadrant D21,507,1692,488,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0808369
B0839778
C0798638
D0889768

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07920
B07920
C07920
D07920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A386674341.122404%
B386677772.009465%
C386673140.812062%
D386675411.399126%

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 44172 38675 32 32 0.07% 0.08%
B 44172 38675 123 123 0.28% 0.32%
C 44172 38675 5 5 0.01% 0.01%
D 44172 38675 191 191 0.43% 0.49%

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 8 15 817435 879.2 4586 4488 924.6
A 13 14 82941 84.85 4586 4488 924.6
A 13 248 44028 42.76 4586 4488 924.6
B 4 81 1403781 1601.06 4598 4490 874.0
B 3 220 110966 121.83 4598 4490 874.0
B 0 228 98002 107.0 4598 4490 874.0
C 9 247 285275 271.67 4480 4504 1033.5
C 12 16 281435 267.95 4480 4504 1033.5
C 13 61 35158 29.66 4480 4504 1033.5
D 8 195 2341116 2124.08 4477 4336 1100.1
D 14 34 1189564 1077.34 4477 4336 1100.1
D 2 216 584780 527.61 4477 4336 1100.1

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