ASTROSAT CZTI

Data Quality Report

Orbit 17451

Creation date: 2024-06-27T17:36:42.607988
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/AS1T03_067T01_9000002582_17451cztM0_level2.evt modeM0/AS1T03_067T01_9000002582_17451cztM0_level2_quad_clean.evt
Size (bytes)881,815,680161,236,800
Size841.0 MB 153.8 MB
Events in quadrant A7,571,7691,032,183
Events in quadrant B5,896,0481,053,047
Events in quadrant C5,770,6271,006,019
Events in quadrant D6,676,213983,427

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306732
B0254292
C0242713
D0279682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1168811109.496920%
B11689990.846950%
C11688830.710130%
D116882031.736824%

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 12818 11690 832 832 6.49% 7.12%
B 12819 11691 17 17 0.13% 0.15%
C 12818 11690 0 0 0.00% 0.00%
D 12818 11690 129 129 1.01% 1.10%

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 3 64 2450800 9170.45 1324 1296 267.1
A 14 237 17402 60.3 1324 1296 267.1
A 0 226 11534 38.33 1324 1296 267.1
B 7 220 302648 1170.28 1366 1330 257.5
B 0 219 60151 228.45 1366 1330 257.5
B 0 189 50723 191.84 1366 1330 257.5
C 3 233 292131 951.82 1310 1319 305.5
C 14 238 202035 656.94 1310 1319 305.5
C 5 218 123761 400.75 1310 1319 305.5
D 11 176 529403 1645.02 1321 1281 321.0
D 13 232 456869 1419.08 1321 1281 321.0
D 13 189 451789 1403.26 1321 1281 321.0

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