ASTROSAT CZTI

Data Quality Report

Orbit 39767

Creation date: 2024-06-27T22:08:45.888636
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_9000005494_39767cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39767cztM0_level2_quad_clean.evt
Size (bytes)327,456,00092,586,240
Size312.3 MB 88.3 MB
Events in quadrant A2,841,807634,059
Events in quadrant B2,489,501646,533
Events in quadrant C2,918,580603,614
Events in quadrant D3,472,071560,168

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116323
B0106352
C0117562
D0136662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5129230.448430%
B5129120.233964%
C5129350.682394%
D51291092.125171%

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 7222 5130 8 8 0.11% 0.16%
B 7222 5130 6 6 0.08% 0.12%
C 7222 5130 25 25 0.35% 0.49%
D 7222 5130 108 108 1.50% 2.11%

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 467985 3865.19 593 582 120.9
A 2 79 24815 200.39 593 582 120.9
A 13 248 23263 187.56 593 582 120.9
B 5 255 58219 516.46 590 575 111.6
B 0 190 47209 417.81 590 575 111.6
B 0 230 26771 234.7 590 575 111.6
C 15 208 325360 2435.59 579 582 133.3
C 15 214 213015 1593.09 579 582 133.3
C 3 233 50022 370.76 579 582 133.3
D 12 227 575864 4011.27 579 561 143.4
D 12 233 363442 2530.17 579 561 143.4
D 13 249 85711 593.7 579 561 143.4

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