ASTROSAT CZTI

Data Quality Report

Orbit 36008

Creation date: 2022-08-09T18:02:23.334858
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/AS1T04_069T01_9000005158_36008cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36008cztM0_level2_quad_clean.evt
Size (bytes)508,815,36085,518,720
Size485.2 MB 81.6 MB
Events in quadrant A3,131,235555,428
Events in quadrant B4,595,832521,577
Events in quadrant C3,249,856533,589
Events in quadrant D3,985,209519,166

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136193
B0179482
C0138732
D0162912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6592140.212379%
B65924326.553398%
C6592340.515777%
D65921211.835558%

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 7934 6593 0 0 0.00% 0.00%
B 7934 6593 320 320 4.03% 4.85%
C 7934 6593 25 25 0.32% 0.38%
D 7934 6593 97 97 1.22% 1.47%

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 10 83 195210 1273.47 755 740 152.7
A 13 254 11061 67.59 755 740 152.7
A 8 144 9876 59.83 755 740 152.7
B 5 172 1209628 8548.4 729 708 141.4
B 0 213 151301 1064.86 729 708 141.4
B 0 190 134807 948.23 729 708 141.4
C 15 214 272234 1603.94 723 728 169.3
C 0 10 85595 501.36 723 728 169.3
C 10 49 35489 205.35 723 728 169.3
D 12 235 425953 2370.85 726 707 179.4
D 12 6 139607 774.4 726 707 179.4
D 13 249 125326 694.78 726 707 179.4

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