ASTROSAT CZTI

Data Quality Report

Orbit 48320

Creation date: 2024-09-07T10:07:56.154293
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/AS1A13_029T01_9000006422_48320cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48320cztM0_level2_quad_clean.evt
Size (bytes)596,799,360124,761,600
Size569.2 MB 119.0 MB
Events in quadrant A8,497,155802,889
Events in quadrant B4,403,094848,685
Events in quadrant C3,683,765834,721
Events in quadrant D4,898,626744,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307771
B0184611
C0167301
D0201711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78575877.471045%
B78573764.785542%
C7857660.840015%
D78573624.607356%

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 7857 7857 33 33 0.42% 0.42%
B 7857 7857 75 75 0.95% 0.95%
C 7857 7857 24 24 0.31% 0.31%
D 7857 7857 204 204 2.60% 2.60%

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 4771250 24764.89 911 892 192.6
A 13 248 108894 560.68 911 892 192.6
A 0 31 67494 345.76 911 892 192.6
B 4 21 281426 1530.36 915 886 183.3
B 0 186 251638 1367.87 915 886 183.3
B 0 200 182085 988.45 915 886 183.3
C 12 2 74309 340.29 908 911 215.7
C 12 249 36377 164.43 908 911 215.7
C 1 3 23715 105.73 908 911 215.7
D 12 233 494091 2161.83 898 869 228.1
D 13 29 230938 1008.41 898 869 228.1
D 1 232 218081 952.06 898 869 228.1

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