ASTROSAT CZTI

Data Quality Report

Orbit 38118

Creation date: 2024-06-27T21:48:37.330611
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/AS1A11_065T21_9000005364_38118cztM0_level2.fits modeM0/AS1A11_065T21_9000005364_38118cztM0_level2_quad_clean.evt
Size (bytes)369,178,56094,273,920
Size352.1 MB 89.9 MB
Events in quadrant A3,200,461639,062
Events in quadrant B2,755,088643,212
Events in quadrant C2,708,680617,835
Events in quadrant D4,567,400563,863

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130193
B0120582
C0115342
D0174882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5584120.214900%
B5584681.217765%
C5584260.465616%
D55841172.095272%

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 7196 5585 4 4 0.06% 0.07%
B 7196 5585 50 50 0.69% 0.90%
C 7196 5585 19 19 0.26% 0.34%
D 7196 5585 109 109 1.51% 1.95%

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 376115 2984.15 622 610 125.8
A 12 16 301652 2392.39 622 610 125.8
A 12 194 51324 403.03 622 610 125.8
B 0 229 214541 1802.31 612 594 118.7
B 5 172 130364 1093.19 612 594 118.7
B 12 111 14843 120.03 612 594 118.7
C 15 214 233391 1665.59 602 606 139.8
C 1 23 60199 426.39 602 606 139.8
C 3 233 27181 190.15 602 606 139.8
D 12 235 1826388 12492.61 599 584 146.2
D 13 249 255580 1744.75 599 584 146.2
D 1 52 47666 322.15 599 584 146.2

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