ASTROSAT CZTI

Data Quality Report

Orbit 38287

Creation date: 2024-06-27T21:50:46.092967
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/AS1A07_145T01_9000005370_38287cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38287cztM0_level2_quad_clean.evt
Size (bytes)477,299,52086,618,880
Size455.2 MB 82.6 MB
Events in quadrant A2,819,225641,929
Events in quadrant B2,689,129661,955
Events in quadrant C3,061,043630,254
Events in quadrant D8,701,822331,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114353
B0111562
C0121342
D0292672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5101170.333268%
B5101460.901784%
C5101841.646736%
D5101242547.539698%

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 7103 5102 9 9 0.13% 0.18%
B 7103 5102 31 31 0.44% 0.61%
C 7103 5102 66 66 0.93% 1.29%
D 7103 5102 2183 2183 30.73% 42.79%

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 385252 3170.04 599 588 121.3
A 9 143 56715 462.55 599 588 121.3
A 12 16 22005 176.5 599 588 121.3
B 5 184 124152 1062.88 603 587 116.3
B 5 172 89382 763.79 603 587 116.3
B 0 229 39459 334.37 603 587 116.3
C 9 236 407956 2973.38 593 600 137.0
C 15 214 212190 1544.44 593 600 137.0
C 15 208 49579 357.51 593 600 137.0
D 1 47 2628593 24012.38 451 438 109.5
D 2 16 2432795 22223.45 451 438 109.5
D 10 203 744950 6802.3 451 438 109.5

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