ASTROSAT CZTI

Data Quality Report

Orbit 33789

Creation date: 2024-06-27T20:52:41.687840
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_9000004820_33789cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33789cztM0_level2_quad_clean.evt
Size (bytes)660,421,44082,068,480
Size629.8 MB 78.3 MB
Events in quadrant A5,260,668509,998
Events in quadrant B3,731,500546,670
Events in quadrant C3,029,028555,546
Events in quadrant D7,597,287476,512

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195163
B0149242
C0124782
D0265732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566489215.748588%
B56642193.866525%
C5664701.235876%
D5664128922.757768%

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 7187 5665 688 688 9.57% 12.14%
B 7187 5665 147 147 2.05% 2.59%
C 7187 5665 55 55 0.77% 0.97%
D 7187 5665 1258 1258 17.50% 22.21%

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 2521604 20651.22 607 595 122.1
A 15 169 327078 2674.43 607 595 122.1
A 7 16 39581 319.36 607 595 122.1
B 5 172 648286 5241.81 645 627 123.6
B 0 197 131799 1061.64 645 627 123.6
B 15 222 97621 785.02 645 627 123.6
C 15 214 244705 1656.19 638 643 147.4
C 0 10 158557 1071.59 638 643 147.4
C 3 233 96148 648.09 638 643 147.4
D 12 235 2461561 17404.54 573 556 141.4
D 8 195 1071958 7577.09 573 556 141.4
D 2 250 823583 5820.55 573 556 141.4

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