ASTROSAT CZTI

Data Quality Report

Orbit 16831

Creation date: 2024-06-27T17:28:21.335978
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/AS1A05_056T01_9000002498_16831cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16831cztM0_level2_quad_clean.evt
Size (bytes)559,823,04082,802,880
Size533.9 MB 79.0 MB
Events in quadrant A3,428,861524,574
Events in quadrant B3,461,418540,243
Events in quadrant C4,361,085506,501
Events in quadrant D5,268,226488,346

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141833
B0141962
C0174172
D0199902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64171171.823282%
B64171201.870033%
C64172113.288141%
D64173585.578931%

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 7518 6419 32 32 0.43% 0.50%
B 7518 6419 9 9 0.12% 0.14%
C 7518 6419 29 29 0.39% 0.45%
D 7518 6419 216 216 2.87% 3.37%

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 15 174 206734 1231.6 830 814 167.2
A 9 143 27974 162.44 830 814 167.2
A 0 226 7258 38.54 830 814 167.2
B 0 229 132269 841.45 831 811 156.2
B 4 173 44361 278.76 831 811 156.2
B 12 111 18733 114.72 831 811 156.2
C 3 233 1072523 5734.91 806 815 186.9
C 14 238 123959 658.96 806 815 186.9
C 0 207 20661 106.2 806 815 186.9
D 1 52 1601494 8225.6 805 783 194.6
D 5 222 559606 2871.63 805 783 194.6
D 2 136 42570 214.73 805 783 194.6

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