ASTROSAT CZTI

Data Quality Report

Orbit 40251

Creation date: 2024-06-27T22:14:10.555391
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_022T01_9000005536_40251cztM0_level2.fits modeM0/AS1A12_022T01_9000005536_40251cztM0_level2_quad_clean.evt
Size (bytes)336,888,00075,631,680
Size321.3 MB 72.1 MB
Events in quadrant A3,473,497494,292
Events in quadrant B2,341,802530,366
Events in quadrant C2,263,808510,888
Events in quadrant D4,016,281416,965

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130960
B0102440
C097150
D0154090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48083196.634775%
B4808631.310316%
C480840.083195%
D480861412.770383%

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 4808 4808 219 219 4.55% 4.55%
B 4808 4808 46 46 0.96% 0.96%
C 4808 4808 0 0 0.00% 0.00%
D 4808 4808 470 470 9.78% 9.78%

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 13 248 1086529 10037.46 518 506 108.2
A 10 83 321699 2968.59 518 506 108.2
A 6 10 46576 425.8 518 506 108.2
B 5 255 193213 1846.61 528 512 104.4
B 0 245 33728 318.3 528 512 104.4
B 12 111 13030 119.95 528 512 104.4
C 15 214 200338 1606.86 521 524 124.4
C 9 54 10354 79.05 521 524 124.4
C 9 187 9411 71.47 521 524 124.4
D 12 227 1526924 12778.17 485 471 119.5
D 2 249 193653 1617.15 485 471 119.5
D 12 217 164605 1373.99 485 471 119.5

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