ASTROSAT CZTI

Data Quality Report

Orbit 36407

Creation date: 2022-06-28T12:59:21.202926
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/AS1T04_084T01_9000005198_36407cztM0_level2.evt modeM0/AS1T04_084T01_9000005198_36407cztM0_level2_quad_clean.evt
Size (bytes)389,833,92058,953,600
Size371.8 MB 56.2 MB
Events in quadrant A2,592,689370,098
Events in quadrant B3,267,505366,992
Events in quadrant C2,997,099357,425
Events in quadrant D2,615,664346,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106243
B0129262
C0116782
D0108302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490090.183673%
B49001082.204082%
C49001312.673469%
D4900240.489796%

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 7053 4901 0 0 0.00% 0.00%
B 7053 4901 52 52 0.74% 1.06%
C 7053 4901 108 108 1.53% 2.20%
D 7053 4901 16 16 0.23% 0.33%

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 182281 1475.47 615 605 123.1
A 7 16 11912 91.83 615 605 123.1
A 13 254 8939 67.68 615 605 123.1
B 5 255 228849 1947.9 610 595 117.2
B 5 172 204592 1740.89 610 595 117.2
B 0 189 137481 1168.17 610 595 117.2
C 0 10 477915 3520.05 588 593 135.6
C 15 214 208057 1529.96 588 593 135.6
C 15 159 11693 81.86 588 593 135.6
D 2 250 97447 661.98 595 580 146.3
D 12 6 75767 513.82 595 580 146.3
D 13 249 45193 304.88 595 580 146.3

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