ASTROSAT CZTI

Data Quality Report

Orbit 20211109_A11_007T07_9000004758_level2

Creation date: 2025-12-29T19:34:55.335113
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_007T07_9000004758cztM0_level2.fits modeM0/AS1A11_007T07_9000004758cztM0_level2_quad_clean.evt
Size (bytes)537,742,080452,252,160
Size512.8 MB 431.3 MB
Events in quadrant A3,542,8323,036,660
Events in quadrant B3,234,5042,807,175
Events in quadrant C3,317,1102,717,472
Events in quadrant D2,130,3461,087,856

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012020
B012020
C012020
D012020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01195480
B01569350
C01623970
D03491580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58975530.089869%
B5897539426.684188%
C5897533605.697329%
D589752818747.794828%

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 81441 58975 0 0 0.00% 0.00%
B 81441 58888 0 0 0.00% 0.00%
C 81441 58970 0 0 0.00% 0.00%
D 81441 58668 0 0 0.00% 0.00%

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 7 110 2929 9.13 924 869 225.7
A 0 29 2901 9.0 924 869 225.7
A 9 19 2803 8.57 924 869 225.7
B 2 9 2799 11.47 858 819 172.6
B 3 80 2539 9.97 858 819 172.6
B 2 8 2245 8.26 858 819 172.6
C 1 81 2836 8.99 878 828 223.3
C 1 80 2698 8.37 878 828 223.3
C 3 203 2655 8.18 878 828 223.3
D 6 67 1601 6.33 611 558 164.9
D 4 160 1595 6.29 611 558 164.9
D 7 3 1589 6.25 611 558 164.9

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