ASTROSAT CZTI

Data Quality Report

Orbit 40720

Creation date: 2024-06-27T22:19:34.490476
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_042T01_9000005560_40720cztM0_level2.fits modeM0/AS1A12_042T01_9000005560_40720cztM0_level2_quad_clean.evt
Size (bytes)327,844,80088,116,480
Size312.7 MB 84.0 MB
Events in quadrant A2,665,130600,220
Events in quadrant B2,571,198631,503
Events in quadrant C3,784,611576,946
Events in quadrant D2,721,445505,750

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110443
B0109502
C0143952
D0115902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A504390.178465%
B5043140.277613%
C50433186.305770%
D50434128.169740%

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 7046 5044 3 3 0.04% 0.06%
B 7046 5044 7 7 0.10% 0.14%
C 7046 5044 327 327 4.64% 6.48%
D 7046 5044 45 45 0.64% 0.89%

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 468188 4141.96 558 547 112.9
A 12 189 30845 268.35 558 547 112.9
A 13 254 7199 58.92 558 547 112.9
B 4 170 235837 2214.17 564 549 106.3
B 0 190 33242 307.66 564 549 106.3
B 5 255 31111 287.6 564 549 106.3
C 9 187 1288593 10266.41 543 546 125.5
C 15 214 214822 1707.89 543 546 125.5
C 14 254 138435 1099.05 543 546 125.5
D 2 250 253695 2005.68 517 503 126.2
D 12 191 151862 1199.0 517 503 126.2
D 2 153 80214 631.44 517 503 126.2

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