ASTROSAT CZTI

Data Quality Report

Orbit 33993

Creation date: 2024-06-27T20:55:09.947909
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/AS1A11_106T03_9000004864_33993cztM0_level2.evt modeM0/AS1A11_106T03_9000004864_33993cztM0_level2_quad_clean.evt
Size (bytes)534,697,92089,066,880
Size509.9 MB 84.9 MB
Events in quadrant A3,829,213562,338
Events in quadrant B3,406,745588,729
Events in quadrant C3,403,737583,658
Events in quadrant D5,150,473546,710

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153862
B0140241
C0136041
D0194461

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59595298.877328%
B59591021.711697%
C59591061.778822%
D59593245.437154%

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 8704 5961 398 398 4.57% 6.68%
B 8704 5961 64 64 0.74% 1.07%
C 8704 5961 76 76 0.87% 1.27%
D 8704 5961 279 279 3.21% 4.68%

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 14 238 1253106 9419.52 657 645 133.0
A 10 83 17725 128.46 657 645 133.0
A 13 6 15858 114.41 657 645 133.0
B 5 172 200086 1513.96 688 672 131.7
B 5 31 92943 700.53 688 672 131.7
B 5 15 90162 679.41 688 672 131.7
C 0 10 270537 1736.22 670 674 155.4
C 15 214 254125 1630.63 670 674 155.4
C 3 233 142673 913.58 670 674 155.4
D 8 195 1258751 7137.35 657 643 176.3
D 12 6 460099 2606.53 657 643 176.3
D 13 249 361805 2048.9 657 643 176.3

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