ASTROSAT CZTI

Data Quality Report

Orbit 22075

Creation date: 2024-06-27T18:36:15.884603
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/AS1A07_138T08_9000003268_22075cztM0_level2.evt modeM0/AS1A07_138T08_9000003268_22075cztM0_level2_quad_clean.evt
Size (bytes)466,536,96089,478,720
Size444.9 MB 85.3 MB
Events in quadrant A3,278,170580,474
Events in quadrant B3,343,438583,010
Events in quadrant C3,286,789553,570
Events in quadrant D3,790,030550,491

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136350
B0138680
C0137260
D0154590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63381392.193121%
B63381572.477122%
C63381872.950458%
D63382173.423793%

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 7543 6339 0 0 0.00% 0.00%
B 7543 6339 2 2 0.03% 0.03%
C 7543 6339 0 0 0.00% 0.00%
D 7543 6339 45 45 0.60% 0.71%

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 13 254 10410 56.99 850 835 168.0
A 0 226 7291 38.43 850 835 168.0
A 3 137 6547 34.0 850 835 168.0
B 12 111 17582 108.57 842 821 154.4
B 0 197 17083 105.34 842 821 154.4
B 11 111 15769 96.83 842 821 154.4
C 14 238 130390 701.13 805 809 184.8
C 9 54 10642 53.2 805 809 184.8
C 8 222 7484 36.12 805 809 184.8
D 1 52 257679 1302.74 824 801 197.2
D 7 238 115312 580.73 824 801 197.2
D 7 223 88740 445.98 824 801 197.2

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