ASTROSAT CZTI

Data Quality Report

Orbit 21115

Creation date: 2024-06-27T18:23:43.650401
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_163T01_9000003118_21115cztM0_level2.evt modeM0/AS1A05_163T01_9000003118_21115cztM0_level2_quad_clean.evt
Size (bytes)516,191,04089,029,440
Size492.3 MB 84.9 MB
Events in quadrant A3,032,877599,984
Events in quadrant B4,755,173549,795
Events in quadrant C3,031,023572,464
Events in quadrant D4,397,277544,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131532
B0182052
C0130132
D0174862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143530.862771%
B614371811.688100%
C6143721.172066%
D61431492.425525%

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 7248 6144 4 4 0.06% 0.07%
B 7247 6143 398 398 5.49% 6.48%
C 7248 6144 0 0 0.00% 0.00%
D 7248 6144 73 73 1.01% 1.19%

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 15 174 22874 142.26 778 761 155.4
A 15 192 13355 81.02 778 761 155.4
A 13 254 8436 49.38 778 761 155.4
B 0 182 1456970 10379.95 736 717 140.3
B 7 220 267421 1901.03 736 717 140.3
B 0 190 76205 538.07 736 717 140.3
C 14 238 117650 668.69 746 750 174.8
C 10 91 5745 28.57 746 750 174.8
C 13 61 5340 26.26 746 750 174.8
D 1 20 958009 5312.71 747 726 180.2
D 1 239 285814 1582.18 747 726 180.2
D 5 222 177800 982.72 747 726 180.2

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