ASTROSAT CZTI

Data Quality Report

Orbit 39302

Creation date: 2024-06-27T22:02:56.494035
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_044T04_9000005464_39302cztM0_level2.fits modeM0/AS1A12_044T04_9000005464_39302cztM0_level2_quad_clean.evt
Size (bytes)521,832,96083,597,760
Size497.7 MB 79.7 MB
Events in quadrant A3,108,087656,092
Events in quadrant B2,700,433679,013
Events in quadrant C2,683,252647,076
Events in quadrant D10,437,680201,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121713
B0109522
C0107832
D0343782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971741.488634%
B4971511.025951%
C4971100.201167%
D4971350470.488835%

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 7095 4972 51 51 0.72% 1.03%
B 7095 4972 28 28 0.39% 0.56%
C 7095 4972 5 5 0.07% 0.10%
D 7095 4972 3099 3099 43.68% 62.33%

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 429031 3482.18 614 603 123.0
A 13 248 299415 2428.69 614 603 123.0
A 13 254 8336 62.85 614 603 123.0
B 5 172 159663 1395.36 608 594 114.0
B 5 255 95806 835.2 608 594 114.0
B 12 111 13436 112.65 608 594 114.0
C 15 214 216446 1571.97 600 605 137.3
C 14 254 56012 403.53 600 605 137.3
C 3 233 50897 366.28 600 605 137.3
D 12 235 8732972 95158.85 383 371 91.8
D 5 222 68108 738.12 383 371 91.8
D 5 32 46400 501.57 383 371 91.8

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