ASTROSAT CZTI

Data Quality Report

Orbit 40187

Creation date: 2024-06-27T22:13:15.546746
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_032T04_9000005528_40187cztM0_level2.fits modeM0/AS1A12_032T04_9000005528_40187cztM0_level2_quad_clean.evt
Size (bytes)321,240,96083,992,320
Size306.4 MB 80.1 MB
Events in quadrant A2,526,340576,876
Events in quadrant B2,426,239593,352
Events in quadrant C2,790,719557,706
Events in quadrant D3,775,249479,568

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104163
B0104232
C0112222
D0144492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4783300.627221%
B4783581.212628%
C47831002.090738%
D47834178.718378%

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 6906 4784 21 21 0.30% 0.44%
B 6906 4784 45 45 0.65% 0.94%
C 6906 4784 96 96 1.39% 2.01%
D 6906 4784 392 392 5.68% 8.19%

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 422280 3885.81 530 522 108.5
A 13 248 51630 470.88 530 522 108.5
A 3 137 5508 45.94 530 522 108.5
B 5 255 264908 2634.88 532 519 100.3
B 0 245 27668 270.57 532 519 100.3
B 4 171 19419 188.36 532 519 100.3
C 9 187 401298 3317.13 524 529 120.8
C 15 214 201519 1663.58 524 529 120.8
C 0 10 76513 628.91 524 529 120.8
D 12 227 717678 5851.92 501 489 122.6
D 2 249 613087 4998.51 501 489 122.6
D 12 79 299866 2442.77 501 489 122.6

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