ASTROSAT CZTI

Data Quality Report

Orbit 41183

Creation date: 2024-06-27T22:25:21.489812
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_101T01_9000005612_41183cztM0_level2.fits modeM0/AS1A12_101T01_9000005612_41183cztM0_level2_quad_clean.evt
Size (bytes)334,935,36087,560,640
Size319.4 MB 83.5 MB
Events in quadrant A2,741,893598,480
Events in quadrant B3,107,022608,198
Events in quadrant C2,749,546570,222
Events in quadrant D3,400,527515,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111633
B0126452
C0114422
D0139812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5126110.214592%
B5126941.833789%
C51261142.223956%
D51262785.423332%

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 7039 5127 2 2 0.03% 0.04%
B 7039 5127 76 76 1.08% 1.48%
C 7039 5127 113 113 1.61% 2.20%
D 7039 5127 260 260 3.69% 5.07%

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 492963 4175.59 572 562 117.9
A 12 189 15050 122.86 572 562 117.9
A 2 79 9053 72.0 572 562 117.9
B 0 229 742350 6824.57 563 548 108.7
B 5 255 78381 716.06 563 548 108.7
B 0 190 62219 567.37 563 548 108.7
C 0 10 392414 3076.63 543 547 127.4
C 15 214 223387 1749.56 543 547 127.4
C 9 54 8018 58.66 543 547 127.4
D 13 249 639759 4842.74 541 526 132.0
D 12 233 633984 4798.99 541 526 132.0
D 2 234 23082 170.88 541 526 132.0

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