ASTROSAT CZTI

Data Quality Report

Orbit 01223

Creation date: 2024-06-27T14:09:22.669344
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_003T01_9000000222_01223cztM0_level2.evt modeM0/AS1G04_003T01_9000000222_01223cztM0_level2_quad_clean.evt
Size (bytes)876,107,52077,728,320
Size835.5 MB 74.1 MB
Events in quadrant A6,466,872506,880
Events in quadrant B6,701,811504,082
Events in quadrant C6,332,991493,186
Events in quadrant D6,678,407477,326

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229592
B0236351
C0225821
D0236541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5317250.470190%
B531740.075230%
C531760.112846%
D53171282.407373%

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 5947 5318 270 270 4.54% 5.08%
B 5947 5318 194 194 3.26% 3.65%
C 5947 5318 136 136 2.29% 2.56%
D 5947 5318 516 516 8.68% 9.70%

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 272445 697.56 1612 1625 388.2
A 13 235 5909 11.03 1612 1625 388.2
A 11 79 5686 10.46 1612 1625 388.2
B 5 191 76588 188.15 1684 1696 398.1
B 15 22 58093 141.68 1684 1696 398.1
B 2 32 42736 103.1 1684 1696 398.1
C 15 241 280318 646.42 1539 1594 431.2
C 3 111 23480 50.76 1539 1594 431.2
C 3 79 20941 44.87 1539 1594 431.2
D 10 102 501633 1087.79 1470 1517 459.8
D 13 169 336596 728.82 1470 1517 459.8
D 10 84 159884 344.46 1470 1517 459.8

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