ASTROSAT CZTI

Data Quality Report

Orbit 51162

Creation date: 2025-03-15T09:31:43.301182
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/AS1C07_001T01_9000006454_51162cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51162cztM0_level2_quad_clean.evt
Size (bytes)36,956,1604,680,000
Size35.2 MB 4.5 MB
Events in quadrant A347,60313,394
Events in quadrant B320,44138,084
Events in quadrant C337,24332,807
Events in quadrant D324,72918,885

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01266311412
B060074704
C061754812
D0107869574

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04839
B04537
C05038
D04733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159
B0117
C0104
D0127

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3205316.562500%
B53971.298701%
C53091.698113%
D362123.314917%

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 2943 482 44 44 1.50% 9.13%
B 3052 803 0 0 0.00% 0.00%
C 3015 812 3 3 0.10% 0.37%
D 3011 556 6 6 0.20% 1.08%

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 14 254 153416 17199.96 29 28 8.9
A 12 3 55665 6238.78 29 28 8.9
A 12 194 6848 764.75 29 28 8.9
B 10 60 44659 3170.49 55 53 14.1
B 8 128 31563 2239.66 55 53 14.1
B 0 171 10551 746.17 55 53 14.1
C 10 171 37271 2381.77 50 49 15.6
C 12 247 32122 2052.29 50 49 15.6
C 6 13 26242 1676.04 50 49 15.6
D 8 176 144707 12843.76 33 31 11.3
D 2 62 30616 2715.21 33 31 11.3
D 2 216 9387 830.59 33 31 11.3

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