ASTROSAT CZTI

Data Quality Report

Orbit 33733

Creation date: 2024-06-27T20:51:55.985808
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_086T01_9000004816_33733cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33733cztM0_level2_quad_clean.evt
Size (bytes)505,949,76076,193,280
Size482.5 MB 72.7 MB
Events in quadrant A2,787,051480,839
Events in quadrant B4,162,696474,423
Events in quadrant C3,106,820481,443
Events in quadrant D4,859,121451,020

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123633
B0162312
C0128882
D0187452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6004110.183211%
B60043696.145903%
C6004460.766156%
D60041492.481679%

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 7286 6005 4 4 0.05% 0.07%
B 7286 6005 319 319 4.38% 5.31%
C 7286 6005 41 41 0.56% 0.68%
D 7286 6005 115 115 1.58% 1.92%

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 15 237 68796 492.28 690 677 138.4
A 15 169 23909 167.89 690 677 138.4
A 14 4 20387 142.44 690 677 138.4
B 5 172 1248112 9709.23 672 656 128.5
B 15 222 65457 504.36 672 656 128.5
B 5 255 60616 466.68 672 656 128.5
C 15 214 280282 1804.28 669 674 155.0
C 0 10 123682 793.76 669 674 155.0
C 14 254 41439 263.05 669 674 155.0
D 8 195 1492341 9067.93 667 647 164.5
D 1 52 167497 1014.27 667 647 164.5
D 2 120 154088 932.76 667 647 164.5

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