ASTROSAT CZTI

Data Quality Report

Orbit 01311

Creation date: 2024-06-27T14:10:48.459442
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/AS1G04_002T02_9000000230_01311cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01311cztM0_level2_quad_clean.evt
Size (bytes)1,090,630,08096,039,360
Size1.0 GB 91.6 MB
Events in quadrant A7,901,656627,533
Events in quadrant B9,334,797621,060
Events in quadrant C7,779,613609,066
Events in quadrant D7,586,469600,483

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280762
B0322811
C0277201
D0270821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6454460.712736%
B6454791.224047%
C6454150.232414%
D6454190.294391%

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 7224 6455 267 267 3.70% 4.14%
B 7224 6455 831 831 11.50% 12.87%
C 7224 6454 161 161 2.23% 2.49%
D 7224 6454 161 161 2.23% 2.49%

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 0 128 171963 355.37 1964 1979 478.3
A 12 243 80146 163.42 1964 1979 478.3
A 4 32 43444 86.69 1964 1979 478.3
B 8 4 1481189 3074.95 2037 2042 481.0
B 6 53 49563 98.79 2037 2042 481.0
B 15 22 21233 39.9 2037 2042 481.0
C 15 241 305849 575.6 1892 1959 528.0
C 3 79 28868 50.97 1892 1959 528.0
C 3 111 26796 47.04 1892 1959 528.0
D 12 22 361899 638.87 1822 1887 563.5
D 15 13 291723 514.34 1822 1887 563.5
D 2 88 32997 55.21 1822 1887 563.5

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