ASTROSAT CZTI

Data Quality Report

Orbit 31458

Creation date: 2024-06-27T20:28:45.785279
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/AS1T04_029T01_9000004582_31458cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31458cztM0_level2_quad_clean.evt
Size (bytes)611,686,08081,835,200
Size583.3 MB 78.0 MB
Events in quadrant A3,734,390501,470
Events in quadrant B6,011,017499,608
Events in quadrant C4,085,268482,484
Events in quadrant D4,187,502473,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157203
B0230023
C0167044
D0171533

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74802343.128342%
B74813865.159738%
C74803454.612299%
D74801862.486631%

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 8705 7480 0 0 0.00% 0.00%
B 8706 7481 3 3 0.03% 0.04%
C 8705 7480 6 6 0.07% 0.08%
D 8705 7480 2 2 0.02% 0.03%

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 12628 59.71 967 944 195.7
A 3 137 10486 48.76 967 944 195.7
A 0 226 8098 36.56 967 944 195.7
B 6 159 2201545 11927.4 942 918 184.5
B 0 190 41370 219.25 942 918 184.5
B 12 1 41130 217.95 942 918 184.5
C 3 233 180111 827.08 915 922 216.7
C 14 238 152993 701.91 915 922 216.7
C 0 10 108456 496.35 915 922 216.7
D 8 195 635675 2866.27 933 910 221.5
D 2 234 25114 109.29 933 910 221.5
D 5 233 23870 103.68 933 910 221.5

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