ASTROSAT CZTI

Data Quality Report

Orbit 40104

Creation date: 2024-06-27T22:12:24.404450
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/AS1A12_004T01_9000005520_40104cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40104cztM0_level2_quad_clean.evt
Size (bytes)352,296,00095,803,200
Size336.0 MB 91.4 MB
Events in quadrant A3,087,940640,266
Events in quadrant B2,713,054662,710
Events in quadrant C2,840,992629,334
Events in quadrant D3,936,269553,290

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126763
B0120602
C0121762
D0158722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A593790.151592%
B593790.151592%
C5937110.185279%
D59373205.389928%

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 7249 5938 7 7 0.10% 0.12%
B 7249 5938 4 4 0.06% 0.07%
C 7249 5938 7 7 0.10% 0.12%
D 7249 5938 283 283 3.90% 4.77%

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 10 83 486414 3652.82 651 638 133.0
A 15 223 38358 283.64 651 638 133.0
A 2 79 26582 195.09 651 638 133.0
B 0 230 35308 271.03 649 629 128.0
B 0 189 34347 263.52 649 629 128.0
B 4 171 30257 231.56 649 629 128.0
C 15 214 245565 1632.41 637 640 150.0
C 9 187 59872 394.77 637 640 150.0
C 0 10 32104 209.7 637 640 150.0
D 12 227 945308 6243.61 619 603 151.3
D 2 249 262279 1729.43 619 603 151.3
D 13 249 89851 589.85 619 603 151.3

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