ASTROSAT CZTI

Data Quality Report

Orbit 41449

Creation date: 2024-06-27T22:29:12.969421
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/AS1T05_100T01_9000005668_41449cztM0_level2.fits modeM0/AS1T05_100T01_9000005668_41449cztM0_level2_quad_clean.evt
Size (bytes)306,927,36085,867,200
Size292.7 MB 81.9 MB
Events in quadrant A2,859,424575,806
Events in quadrant B2,379,679593,727
Events in quadrant C3,086,141538,990
Events in quadrant D2,622,341519,915

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115123
B0107792
C0124532
D0116862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5306170.320392%
B530660.113080%
C53062554.805880%
D5306330.621937%

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 6980 5307 3 3 0.04% 0.06%
B 6980 5307 1 1 0.01% 0.02%
C 6980 5307 246 246 3.52% 4.64%
D 6980 5307 26 26 0.37% 0.49%

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 512465 4234.77 586 572 120.9
A 13 248 41269 336.68 586 572 120.9
A 2 79 31606 256.74 586 572 120.9
B 0 190 75478 660.09 582 566 113.5
B 12 111 14613 123.78 582 566 113.5
B 11 111 13646 115.25 582 566 113.5
C 0 10 703562 5395.2 555 558 130.3
C 15 214 217727 1666.66 555 558 130.3
C 13 61 3676 23.93 555 558 130.3
D 1 47 163846 1173.7 569 554 139.1
D 13 249 104289 745.62 569 554 139.1
D 2 249 83398 595.46 569 554 139.1

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