ASTROSAT CZTI

Data Quality Report

Orbit 50174

Creation date: 2025-01-07T10:39:46.349064
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/AS1C09_003T01_9000006442_50174cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50174cztM0_level2_quad_clean.evt
Size (bytes)1,032,174,72066,683,520
Size984.4 MB 63.6 MB
Events in quadrant A6,415,484579,826
Events in quadrant B3,588,199668,610
Events in quadrant C14,010,050133,682
Events in quadrant D13,711,706200,125

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236671
B0150061
C0458731
D0450048

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62525759.197057%
B62521081.727447%
C6252504580.694178%
D6251441670.644697%

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 7402 6253 445 445 6.01% 7.12%
B 7402 6252 50 50 0.68% 0.80%
C 7402 6253 4920 4920 66.47% 78.68%
D 7401 6252 4503 4503 60.84% 72.02%

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 6 250 899627 5529.16 647 630 162.6
A 10 253 779069 4787.69 647 630 162.6
A 8 8 663031 4074.01 647 630 162.6
B 5 172 290451 2050.63 663 643 141.3
B 0 213 91420 642.32 663 643 141.3
B 4 216 86382 606.67 663 643 141.3
C 15 213 7849512 83389.95 333 331 94.1
C 4 111 1823564 19370.09 333 331 94.1
C 15 230 809599 8597.69 333 331 94.1
D 12 6 3574871 29270.19 415 400 122.1
D 15 185 2778436 22748.44 415 400 122.1
D 8 192 959392 7852.88 415 400 122.1

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