ASTROSAT CZTI

Data Quality Report

Orbit 00351

Creation date: 2024-06-27T13:59:04.498085
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/AS1P01_162T05_9000000046_00351cztM0_level2.evt modeM0/AS1P01_162T05_9000000046_00351cztM0_level2_quad_clean.evt
Size (bytes)909,610,56064,938,240
Size867.5 MB 61.9 MB
Events in quadrant A6,804,096414,451
Events in quadrant B9,941,595382,509
Events in quadrant C5,212,884418,206
Events in quadrant D5,263,914406,808

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237593
B0332412
C0189742
D0191452

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48982114.307881%
B4898157532.155982%
C4898140.285831%
D4898200.408330%

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 7114 4899 670 670 9.42% 13.68%
B 7114 4899 2314 2314 32.53% 47.23%
C 7114 4899 53 53 0.75% 1.08%
D 7114 4899 127 127 1.79% 2.59%

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 0 69 1421452 4674.71 1370 1359 303.8
A 0 238 63998 206.2 1370 1359 303.8
A 12 150 6472 16.83 1370 1359 303.8
B 2 2 4751240 15193.22 1329 1340 312.6
B 0 23 30927 94.64 1329 1340 312.6
B 4 67 21522 64.55 1329 1340 312.6
C 5 234 56323 154.45 1280 1327 356.1
C 3 159 50940 139.33 1280 1327 356.1
C 1 1 36502 98.78 1280 1327 356.1
D 2 171 218229 593.59 1214 1257 365.5
D 2 25 192024 521.9 1214 1257 365.5
D 1 5 71842 193.11 1214 1257 365.5

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