ASTROSAT CZTI

Data Quality Report

Orbit 24627

Creation date: 2024-06-27T19:08:05.337723
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/AS1T03_189T01_9000003614_24627cztM0_level2.evt modeM0/AS1T03_189T01_9000003614_24627cztM0_level2_quad_clean.evt
Size (bytes)703,391,040121,881,600
Size670.8 MB 116.2 MB
Events in quadrant A3,959,098807,468
Events in quadrant B4,823,415810,729
Events in quadrant C7,483,871725,672
Events in quadrant D4,476,966773,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172933
B0198113
C0279183
D0188973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8239600.728244%
B82403834.648058%
C8240149618.155340%
D82401732.099515%

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 8694 8242 0 0 0.00% 0.00%
B 8695 8243 156 156 1.79% 1.89%
C 8695 8243 653 653 7.51% 7.92%
D 8695 8243 117 117 1.35% 1.42%

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 12 96 13923 62.93 1020 997 205.4
A 13 254 11685 52.03 1020 997 205.4
A 6 16 10967 48.54 1020 997 205.4
B 3 64 873113 4489.13 997 968 194.3
B 5 172 28551 141.97 997 968 194.3
B 12 111 24334 120.27 997 968 194.3
C 7 247 3638993 16479.39 938 947 220.8
C 14 238 146487 659.26 938 947 220.8
C 3 233 25888 112.98 938 947 220.8
D 7 238 357891 1471.45 993 963 242.6
D 9 1 175704 720.37 993 963 242.6
D 8 195 127512 521.7 993 963 242.6

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