ASTROSAT CZTI

Data Quality Report

Orbit 18962

Creation date: 2024-06-27T17:57:07.675931
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/AS1A05_205T01_9000002824_18962cztM0_level2.evt modeM0/AS1A05_205T01_9000002824_18962cztM0_level2_quad_clean.evt
Size (bytes)527,644,800101,557,440
Size503.2 MB 96.9 MB
Events in quadrant A3,266,126671,019
Events in quadrant B4,516,925672,025
Events in quadrant C3,336,437664,014
Events in quadrant D4,438,845634,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132532
B0175662
C0135122
D0170032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6216430.691763%
B62163104.987130%
C6216941.512227%
D62163325.341055%

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 7556 6217 3 3 0.04% 0.05%
B 7556 6217 185 185 2.45% 2.98%
C 7556 6217 0 0 0.00% 0.00%
D 7556 6217 228 228 3.02% 3.67%

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 14 235 37572 220.72 835 820 166.5
A 15 174 15765 89.75 835 820 166.5
A 13 254 7573 40.56 835 820 166.5
B 3 112 1032315 6768.27 817 798 152.4
B 0 189 243004 1589.23 817 798 152.4
B 7 220 23186 146.9 817 798 152.4
C 14 238 128713 667.77 821 831 191.5
C 6 96 7510 34.88 821 831 191.5
C 13 61 5643 25.13 821 831 191.5
D 7 238 608895 3071.54 815 792 198.0
D 12 218 517342 2609.11 815 792 198.0
D 1 52 106259 532.72 815 792 198.0

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