ASTROSAT CZTI

Data Quality Report

Orbit 18944

Creation date: 2024-06-27T17:56:51.884494
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_090T01_9000002822_18944cztM0_level2.evt modeM0/AS1T03_090T01_9000002822_18944cztM0_level2_quad_clean.evt
Size (bytes)672,454,080102,945,600
Size641.3 MB 98.2 MB
Events in quadrant A5,451,646665,915
Events in quadrant B3,547,749708,905
Events in quadrant C3,201,632682,260
Events in quadrant D7,716,692598,758

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204532
B0147912
C0136002
D0274222

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A661667510.202539%
B6616660.997582%
C6616440.665054%
D6616160524.259371%

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 7771 6617 523 523 6.73% 7.90%
B 7771 6617 14 14 0.18% 0.21%
C 7771 6617 0 0 0.00% 0.00%
D 7771 6617 1118 1118 14.39% 16.90%

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 2427045 15627.76 777 763 155.3
A 6 16 20934 129.92 777 763 155.3
A 13 254 9445 55.92 777 763 155.3
B 3 112 190632 1253.57 810 792 151.4
B 0 189 114663 751.92 810 792 151.4
B 0 229 31743 204.38 810 792 151.4
C 14 238 122310 675.07 778 782 180.0
C 3 233 47148 257.56 778 782 180.0
C 13 61 5501 26.21 778 782 180.0
D 7 238 4720704 27323.37 712 692 172.7
D 12 218 183836 1060.19 712 692 172.7
D 1 52 56745 324.48 712 692 172.7

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