ASTROSAT CZTI

Data Quality Report

Orbit 04064

Creation date: 2024-06-27T14:36:54.676688
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/AS1G05_241T04_9000000518_04064cztM0_level2.evt modeM0/AS1G05_241T04_9000000518_04064cztM0_level2_quad_clean.evt
Size (bytes)476,314,56061,652,160
Size454.2 MB 58.8 MB
Events in quadrant A3,411,386359,363
Events in quadrant B3,205,839360,567
Events in quadrant C2,918,834354,596
Events in quadrant D4,450,071340,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143593
B0136692
C0132102
D0177112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64631161.794832%
B6463781.206870%
C6463350.541544%
D64632503.868173%

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 7548 6463 42 42 0.56% 0.65%
B 7548 6463 7 7 0.09% 0.11%
C 7548 6463 1 1 0.01% 0.02%
D 7548 6463 158 158 2.09% 2.44%

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 50 320775 2031.58 772 756 157.5
A 0 199 75419 473.98 772 756 157.5
A 8 15 21595 132.29 772 756 157.5
B 4 81 85306 560.67 778 759 150.8
B 14 167 33034 214.03 778 759 150.8
B 15 204 28104 181.34 778 759 150.8
C 9 144 16279 90.49 741 744 171.7
C 12 4 9328 50.0 741 744 171.7
C 13 61 6109 31.25 741 744 171.7
D 10 172 925948 5182.33 736 716 178.5
D 13 53 300511 1679.19 736 716 178.5
D 2 232 224869 1255.51 736 716 178.5

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