ASTROSAT CZTI

Data Quality Report

Orbit 25174

Creation date: 2024-06-27T19:14:43.155694
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/AS1A07_171T02_9000003686_25174cztM0_level2.evt modeM0/AS1A07_171T02_9000003686_25174cztM0_level2_quad_clean.evt
Size (bytes)317,200,32057,070,080
Size302.5 MB 54.4 MB
Events in quadrant A2,029,308363,365
Events in quadrant B2,242,582370,956
Events in quadrant C2,422,805352,426
Events in quadrant D2,623,550343,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087100
B093220
C097500
D0106230

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A422790.212917%
B4227320.757038%
C42271423.359357%
D4227561.324817%

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 5192 4227 0 0 0.00% 0.00%
B 5192 4227 5 5 0.10% 0.12%
C 5192 4227 131 131 2.52% 3.10%
D 5192 4227 46 46 0.89% 1.09%

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 13 254 6934 60.48 525 515 106.1
A 3 137 4788 40.26 525 515 106.1
A 0 226 4485 37.4 525 515 106.1
B 3 64 139630 1387.94 526 513 100.2
B 0 190 21959 213.96 526 513 100.2
B 12 111 12158 116.18 526 513 100.2
C 7 247 328513 2771.44 508 511 118.4
C 14 238 81608 685.23 508 511 118.4
C 7 220 15982 130.72 508 511 118.4
D 8 195 263404 1937.06 506 496 135.7
D 12 233 145027 1064.88 506 496 135.7
D 1 52 144150 1058.42 506 496 135.7

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