ASTROSAT CZTI

Data Quality Report

Orbit 17566

Creation date: 2024-06-27T17:38:04.150387
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_012T02_9000002602_17566cztM0_level2.evt modeM0/AS1A05_012T02_9000002602_17566cztM0_level2_quad_clean.evt
Size (bytes)444,513,600100,111,680
Size423.9 MB 95.5 MB
Events in quadrant A3,354,028647,627
Events in quadrant B3,179,117651,637
Events in quadrant C3,192,747627,441
Events in quadrant D3,265,364622,742

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147682
B0141992
C0141512
D0147982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6927180.259853%
B6927150.216544%
C6927470.678504%
D6927380.548578%

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 7817 6928 10 10 0.13% 0.14%
B 7817 6928 2 2 0.03% 0.03%
C 7817 6928 0 0 0.00% 0.00%
D 7817 6928 17 17 0.22% 0.25%

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 14 237 275865 1690.26 799 783 162.7
A 0 226 6840 37.22 799 783 162.7
A 0 13 6123 32.81 799 783 162.7
B 12 111 18256 114.17 802 782 153.0
B 4 216 16681 103.88 802 782 153.0
B 11 111 15871 98.59 802 782 153.0
C 14 238 119604 660.39 770 774 179.9
C 0 207 26541 143.2 770 774 179.9
C 3 233 23113 124.15 770 774 179.9
D 13 189 158096 831.68 775 752 189.2
D 5 222 63431 331.31 775 752 189.2
D 1 255 42347 219.86 775 752 189.2

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