ASTROSAT CZTI

Data Quality Report

Orbit 12756

Creation date: 2024-06-27T16:32:00.079720
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/AS1A04_044T01_9000001882_12756cztM0_level2.evt modeM0/AS1A04_044T01_9000001882_12756cztM0_level2_quad_clean.evt
Size (bytes)768,643,200109,584,000
Size733.0 MB 104.5 MB
Events in quadrant A4,784,303707,075
Events in quadrant B6,083,153664,123
Events in quadrant C4,867,023719,877
Events in quadrant D6,989,884657,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197423
B0235262
C0199982
D0263912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8192680.830078%
B819291411.157227%
C81922983.637695%
D81925947.250977%

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 9052 8194 1 1 0.01% 0.01%
B 9052 8194 592 592 6.54% 7.22%
C 9052 8194 275 275 3.04% 3.36%
D 9052 8194 555 555 6.13% 6.77%

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 23 566798 2840.44 972 949 199.2
A 15 222 369020 1847.64 972 949 199.2
A 0 226 45073 221.49 972 949 199.2
B 4 239 2276294 12818.87 919 895 177.5
B 0 214 51193 283.36 919 895 177.5
B 0 197 39783 219.08 919 895 177.5
C 15 208 1229796 5633.03 933 936 218.2
C 13 61 6763 26.71 933 936 218.2
C 3 202 2328 6.38 933 936 218.2
D 1 52 2818283 12447.29 918 889 226.3
D 10 199 240082 1056.76 918 889 226.3
D 2 136 197358 868.0 918 889 226.3

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