ASTROSAT CZTI

Data Quality Report

Orbit 30488

Creation date: 2024-06-27T20:15:55.245124
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_058T04_9000004382_30488cztM0_level2.evt modeM0/AS1A10_058T04_9000004382_30488cztM0_level2_quad_clean.evt
Size (bytes)656,098,560108,518,400
Size625.7 MB 103.5 MB
Events in quadrant A3,724,963720,236
Events in quadrant B6,066,228711,380
Events in quadrant C4,660,697670,934
Events in quadrant D4,912,897663,808

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159372
B0232652
C0188712
D0196982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74691111.486143%
B74702673.574297%
C74702933.922356%
D74702202.945114%

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 8669 7471 11 11 0.13% 0.15%
B 8670 7472 41 41 0.47% 0.55%
C 8670 7472 41 41 0.47% 0.55%
D 8670 7472 142 142 1.64% 1.90%

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 13 78014 407.17 932 914 189.4
A 4 2 23083 117.08 932 914 189.4
A 8 192 22227 112.56 932 914 189.4
B 6 159 2174596 12286.04 916 892 176.9
B 0 229 233936 1317.19 916 892 176.9
B 12 111 21783 118.08 916 892 176.9
C 3 233 950950 4667.08 872 877 203.6
C 14 238 138926 678.14 872 877 203.6
C 0 10 102301 498.23 872 877 203.6
D 12 218 596130 2794.2 888 863 213.0
D 8 195 360604 1688.63 888 863 213.0
D 1 52 118425 551.84 888 863 213.0

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