ASTROSAT CZTI

Data Quality Report

Orbit 01335

Creation date: 2024-06-27T14:11:08.812890
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_01335cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01335cztM0_level2_quad_clean.evt
Size (bytes)1,292,538,240113,149,440
Size1.2 GB 107.9 MB
Events in quadrant A9,696,700733,297
Events in quadrant B10,816,730735,630
Events in quadrant C9,342,427723,651
Events in quadrant D8,788,509707,479

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341742
B0375061
C0331451
D0315241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75671471.942646%
B75671071.414035%
C7567190.251090%
D75671081.427250%

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 7607 7568 558 558 7.34% 7.37%
B 7607 7568 904 904 11.88% 11.95%
C 7607 7568 484 484 6.36% 6.40%
D 7607 7568 521 521 6.85% 6.88%

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 4 32 159646 262.9 2449 2463 597.9
A 15 127 101655 165.9 2449 2463 597.9
A 0 214 19474 28.45 2449 2463 597.9
B 8 4 635224 1056.29 2506 2516 599.0
B 6 53 328146 543.63 2506 2516 599.0
B 5 249 206495 340.54 2506 2516 599.0
C 15 241 363500 572.31 2246 2321 631.1
C 3 9 147328 229.77 2246 2321 631.1
C 3 79 29315 42.77 2246 2321 631.1
D 1 83 146122 217.25 2235 2289 662.1
D 13 252 117138 173.47 2235 2289 662.1
D 10 84 45543 65.33 2235 2289 662.1

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