ASTROSAT CZTI

Data Quality Report

Orbit 27786

Creation date: 2024-06-27T19:44:23.738962
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_016T01_9000004016_27786cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27786cztM0_level2_quad_clean.evt
Size (bytes)572,693,76096,396,480
Size546.2 MB 91.9 MB
Events in quadrant A3,349,429623,222
Events in quadrant B4,267,619622,281
Events in quadrant C3,507,786606,208
Events in quadrant D5,741,309576,301

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143970
B0171670
C0147500
D0218630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70501171.659574%
B70514125.843143%
C70511642.325911%
D70515998.495249%

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 8530 7050 0 0 0.00% 0.00%
B 8531 7051 213 213 2.50% 3.02%
C 8531 7051 1 1 0.01% 0.01%
D 8530 7050 418 418 4.90% 5.93%

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 13 254 12912 68.34 868 847 176.5
A 3 137 8234 41.84 868 847 176.5
A 0 226 7591 38.2 868 847 176.5
B 3 64 542626 3324.36 840 817 163.0
B 10 245 371047 2271.61 840 817 163.0
B 4 52 47863 288.66 840 817 163.0
C 3 233 150100 760.87 827 832 196.2
C 14 238 132143 669.34 827 832 196.2
C 13 61 5695 24.79 827 832 196.2
D 1 52 2305673 11766.6 811 788 195.9
D 7 223 157652 800.8 811 788 195.9
D 13 104 84389 426.79 811 788 195.9

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