ASTROSAT CZTI

Data Quality Report

Orbit 27977

Creation date: 2024-06-27T19:46:40.177361
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/AS1A10_065T03_9000004040_27977cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27977cztM0_level2_quad_clean.evt
Size (bytes)531,544,32070,407,360
Size506.9 MB 67.1 MB
Events in quadrant A3,303,224435,883
Events in quadrant B3,346,760437,312
Events in quadrant C4,401,182405,143
Events in quadrant D4,615,726409,931

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137180
B0138820
C0171450
D0181010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6358560.880780%
B6358771.211073%
C63585538.697704%
D63581983.114187%

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 7483 6358 1 1 0.01% 0.02%
B 7483 6358 0 0 0.00% 0.00%
C 7483 6358 303 303 4.05% 4.77%
D 7483 6358 99 99 1.32% 1.56%

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 8 192 9364 50.39 853 837 169.2
A 13 254 9173 49.26 853 837 169.2
A 3 137 8004 42.35 853 837 169.2
B 12 111 20066 119.87 851 831 160.5
B 11 111 18096 107.59 851 831 160.5
B 14 111 17802 105.76 851 831 160.5
C 2 16 1108282 5956.56 799 807 185.9
C 14 238 127748 682.75 799 807 185.9
C 3 233 54715 289.94 799 807 185.9
D 1 52 895138 4591.86 825 806 194.8
D 8 195 578794 2967.62 825 806 194.8
D 7 80 26011 129.41 825 806 194.8

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