ASTROSAT CZTI

Data Quality Report

Orbit 01346

Creation date: 2024-06-27T14:11:17.996703
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_01346cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01346cztM0_level2_quad_clean.evt
Size (bytes)1,056,844,800104,921,280
Size1007.9 MB 100.1 MB
Events in quadrant A7,887,551681,633
Events in quadrant B8,535,474694,895
Events in quadrant C7,638,885685,143
Events in quadrant D7,506,863655,597

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281293
B0300422
C0274122
D0270432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6602370.560436%
B6602330.499849%
C660240.060588%
D6602961.454105%

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 7902 6603 297 297 3.76% 4.50%
B 7902 6603 356 356 4.51% 5.39%
C 7902 6603 150 150 1.90% 2.27%
D 7902 6603 391 391 4.95% 5.92%

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 15 127 356022 756.12 1952 1964 468.3
A 14 5 19949 38.41 1952 1964 468.3
A 4 32 8583 14.14 1952 1964 468.3
B 8 4 339397 704.71 2065 2075 478.7
B 12 52 82748 168.54 2065 2075 478.7
B 6 53 80173 163.16 2065 2075 478.7
C 15 241 271996 522.96 1874 1936 516.4
C 3 111 23563 41.88 1874 1936 516.4
C 3 79 19715 34.43 1874 1936 516.4
D 10 84 643540 1193.34 1773 1828 537.7
D 1 83 103936 189.88 1773 1828 537.7
D 5 190 25693 44.38 1773 1828 537.7

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