ASTROSAT CZTI

Data Quality Report

Orbit 55299

Creation date: 2025-12-17T23:42:18.195402
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/AS1A14_009T01_9000006534_55299cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55299cztM0_level2_quad_clean.evt
Size (bytes)422,233,92092,304,000
Size402.7 MB 88.0 MB
Events in quadrant A3,602,261591,728
Events in quadrant B2,843,483656,152
Events in quadrant C3,005,240589,812
Events in quadrant D5,683,086512,646

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152391
B0132641
C0137661
D0212351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63683124.899497%
B6368671.052136%
C6369651.020568%
D636964910.189983%

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 7468 6368 242 242 3.24% 3.80%
B 7468 6368 5 5 0.07% 0.08%
C 7469 6370 38 38 0.51% 0.60%
D 7469 6369 536 536 7.18% 8.42%

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 7 7 504391 3063.13 663 646 164.5
A 0 8 235398 1427.46 663 646 164.5
A 4 205 71304 429.65 663 646 164.5
B 0 199 68379 476.01 665 641 142.3
B 10 247 33897 233.7 665 641 142.3
B 7 252 32774 225.8 665 641 142.3
C 13 3 114945 630.51 658 651 181.3
C 9 38 80214 438.91 658 651 181.3
C 14 254 67900 370.98 658 651 181.3
D 11 129 1907939 10700.76 631 605 178.2
D 6 239 461998 2588.56 631 605 178.2
D 7 96 377410 2114.0 631 605 178.2

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