ASTROSAT CZTI

Data Quality Report

Orbit 39393

Creation date: 2024-06-27T22:04:02.065857
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/AS1A12_018T01_9000005470_39393cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39393cztM0_level2_quad_clean.evt
Size (bytes)495,604,80089,844,480
Size472.6 MB 85.7 MB
Events in quadrant A2,995,104628,247
Events in quadrant B2,759,212643,741
Events in quadrant C4,255,065575,322
Events in quadrant D7,894,518474,890

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123373
B0121342
C0162372
D0274382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5690330.579965%
B5690360.632689%
C56903245.694200%
D5690126522.231986%

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 7123 5691 19 19 0.27% 0.33%
B 7123 5691 23 23 0.32% 0.40%
C 7123 5691 341 341 4.79% 5.99%
D 7123 5691 1147 1147 16.10% 20.15%

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 10 83 441390 3489.82 621 608 126.3
A 13 248 114389 900.84 621 608 126.3
A 15 174 15985 121.74 621 608 126.3
B 5 172 310718 2573.35 614 596 120.5
B 4 170 19546 157.24 614 596 120.5
B 6 203 15906 127.04 614 596 120.5
C 9 187 1618199 11626.39 591 594 139.1
C 15 214 254958 1828.22 591 594 139.1
C 15 208 61111 434.96 591 594 139.1
D 12 235 5137391 37574.51 559 543 136.7
D 2 120 354391 2588.29 559 543 136.7
D 13 249 100447 730.77 559 543 136.7

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