ASTROSAT CZTI

Data Quality Report

Orbit 15452

Creation date: 2024-06-27T17:08:41.175353
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/AS1G08_032T01_9000002280_15452cztM0_level2.evt modeM0/AS1G08_032T01_9000002280_15452cztM0_level2_quad_clean.evt
Size (bytes)868,112,640169,649,280
Size827.9 MB 161.8 MB
Events in quadrant A6,205,7231,066,612
Events in quadrant B6,319,4331,083,413
Events in quadrant C6,649,1091,060,196
Events in quadrant D6,226,3431,019,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274494
B0276033
C0278523
D0278993

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131461421.080176%
B131461491.133425%
C13146760.578123%
D131461130.859577%

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 14982 13150 16 16 0.11% 0.12%
B 14982 13150 6 6 0.04% 0.05%
C 14982 13150 5 5 0.03% 0.04%
D 14982 13150 49 49 0.33% 0.37%

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 14 238 158445 506.13 1548 1514 310.1
A 14 237 48608 151.89 1548 1514 310.1
A 9 143 34480 106.32 1548 1514 310.1
B 4 142 77969 258.3 1554 1515 296.0
B 0 229 43738 142.65 1554 1515 296.0
B 12 111 36012 116.55 1554 1515 296.0
C 3 233 649192 1854.38 1510 1519 349.3
C 4 206 50988 141.64 1510 1519 349.3
C 9 54 29474 80.04 1510 1519 349.3
D 5 222 159720 432.82 1507 1462 365.6
D 10 70 155012 419.95 1507 1462 365.6
D 1 52 53760 143.03 1507 1462 365.6

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