ASTROSAT CZTI

Data Quality Report

Orbit 20210419_A10_071T07_9000004322_level2

Creation date: 2025-12-24T21:28:26.079246
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_071T07_9000004322cztM0_level2.fits modeM0/AS1A10_071T07_9000004322cztM0_level2_quad_clean.evt
Size (bytes)605,439,360439,217,280
Size577.4 MB 418.9 MB
Events in quadrant A3,838,6302,455,632
Events in quadrant B3,595,6142,413,056
Events in quadrant C3,585,8202,241,867
Events in quadrant D3,196,1222,069,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253530
B01822410
C01349340
D01441720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012220
B012220
C012220
D012220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A600337191.197675%
B6003312922.152150%
C6003330385.060550%
D6003321953.656322%

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 69868 60033 0 0 0.00% 0.00%
B 69868 60032 0 0 0.00% 0.00%
C 69868 59969 0 0 0.00% 0.00%
D 69868 60026 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 0 29 3736 11.56 999 941 241.8
A 7 110 2901 8.11 999 941 241.8
A 0 30 2831 7.82 999 941 241.8
B 2 9 2757 9.77 951 909 189.1
B 2 8 2375 7.75 951 909 189.1
B 3 17 2365 7.7 951 909 189.1
C 1 80 2764 7.8 948 889 240.5
C 1 81 2729 7.65 948 889 240.5
C 12 241 2484 6.63 948 889 240.5
D 15 46 2363 6.25 913 831 245.3
D 6 67 2271 5.87 913 831 245.3
D 10 189 2270 5.87 913 831 245.3

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