ASTROSAT CZTI

Data Quality Report

Orbit 45907

Creation date: 2024-06-27T23:17:32.333367
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/AS1A13_033T02_9000006140_45907cztM0_level2.fits modeM0/AS1A13_033T02_9000006140_45907cztM0_level2_quad_clean.evt
Size (bytes)476,956,800106,784,640
Size454.9 MB 101.8 MB
Events in quadrant A5,680,821699,821
Events in quadrant B4,017,202735,301
Events in quadrant C2,937,668713,164
Events in quadrant D4,514,963631,377

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215082
B0163752
C0137022
D0181952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65071832.812356%
B65071101.690487%
C6507220.338097%
D65072924.487475%

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 7592 6508 56 56 0.74% 0.86%
B 7592 6507 36 36 0.47% 0.55%
C 7592 6508 2 2 0.03% 0.03%
D 7592 6508 265 265 3.49% 4.07%

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 2951606 20256.91 696 681 145.7
A 7 3 27670 185.27 696 681 145.7
A 0 243 8535 53.91 696 681 145.7
B 3 112 1122241 8143.11 702 681 137.7
B 0 245 36964 263.43 702 681 137.7
B 4 171 31045 220.46 702 681 137.7
C 2 14 190204 1156.68 695 702 163.8
C 10 20 27578 164.04 695 702 163.8
C 3 233 6851 37.53 695 702 163.8
D 1 52 1198019 7017.48 676 653 170.6
D 13 249 211293 1234.51 676 653 170.6
D 13 138 156036 910.66 676 653 170.6

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