ASTROSAT CZTI

Data Quality Report

Orbit 40445

Creation date: 2024-06-27T22:16:11.378566
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_022T01_9000005540_40445cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40445cztM0_level2_quad_clean.evt
Size (bytes)311,371,20095,705,280
Size296.9 MB 91.3 MB
Events in quadrant A2,911,193665,875
Events in quadrant B2,495,434681,231
Events in quadrant C2,846,997630,256
Events in quadrant D2,863,935554,383

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117163
B0106082
C0115492
D0117422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5235110.210124%
B523530.057307%
C5235410.783190%
D52353105.921681%

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 7268 5236 3 3 0.04% 0.06%
B 7268 5236 0 0 0.00% 0.00%
C 7268 5236 30 30 0.41% 0.57%
D 7268 5236 22 22 0.30% 0.42%

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 10 83 471034 3728.67 623 614 126.2
A 7 3 15335 116.68 623 614 126.2
A 3 1 12168 91.58 623 614 126.2
B 3 112 37577 313.22 613 597 118.1
B 4 170 22611 186.46 613 597 118.1
B 0 230 22557 186.0 613 597 118.1
C 14 254 280377 2061.37 595 599 135.7
C 15 214 230027 1690.4 595 599 135.7
C 0 10 10817 75.28 595 599 135.7
D 12 227 258238 1837.25 579 565 140.2
D 12 191 142865 1014.62 579 565 140.2
D 13 249 97260 689.45 579 565 140.2

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