ASTROSAT CZTI

Data Quality Report

Orbit 25595

Creation date: 2024-06-27T19:19:21.242524
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/AS1A09_043T02_9000003726_25595cztM0_level2.evt modeM0/AS1A09_043T02_9000003726_25595cztM0_level2_quad_clean.evt
Size (bytes)678,530,880100,272,960
Size647.1 MB 95.6 MB
Events in quadrant A4,914,743643,848
Events in quadrant B4,025,889655,701
Events in quadrant C3,810,868615,162
Events in quadrant D7,278,822587,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192950
B0164350
C0159780
D0268600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76752763.596091%
B76752393.114007%
C76752463.205212%
D76755136.684039%

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 8015 7678 15 15 0.19% 0.20%
B 8015 7678 0 0 0.00% 0.00%
C 8015 7677 0 0 0.00% 0.00%
D 8015 7678 288 288 3.59% 3.75%

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 8 192 598652 2997.84 982 959 199.4
A 6 16 519085 2598.75 982 959 199.4
A 4 2 12247 56.62 982 959 199.4
B 0 219 92566 492.83 973 947 185.9
B 0 190 66283 351.45 973 947 185.9
B 15 33 25270 130.84 973 947 185.9
C 14 238 149847 679.08 931 936 219.3
C 3 233 21069 91.81 931 936 219.3
C 0 207 9928 41.01 931 936 219.3
D 1 52 3078559 13354.59 943 918 230.5
D 2 244 362897 1570.71 943 918 230.5
D 8 195 204685 884.19 943 918 230.5

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