ASTROSAT CZTI

Data Quality Report

Orbit 35104

Creation date: 2024-06-27T21:09:21.403033
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/AS1T05_015T01_9000005026_35104cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35104cztM0_level2_quad_clean.evt
Size (bytes)484,790,40079,364,160
Size462.3 MB 75.7 MB
Events in quadrant A2,528,921520,091
Events in quadrant B2,719,282529,304
Events in quadrant C3,314,518526,551
Events in quadrant D5,788,283484,758

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105273
B0109502
C0127972
D0206802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4883100.204792%
B4883561.146836%
C48832475.058366%
D488352810.813025%

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 7004 4884 0 0 0.00% 0.00%
B 7004 4884 21 21 0.30% 0.43%
C 7004 4884 196 196 2.80% 4.01%
D 7004 4884 349 349 4.98% 7.15%

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 81947 656.76 626 618 123.8
A 9 143 13216 101.73 626 618 123.8
A 13 6 11384 86.94 626 618 123.8
B 5 172 182569 1548.53 623 607 117.5
B 5 255 55150 464.17 623 607 117.5
B 4 232 16018 131.15 623 607 117.5
C 0 10 682424 4945.66 604 610 137.9
C 15 214 200868 1452.61 604 610 137.9
C 14 67 51888 371.95 604 610 137.9
D 8 195 2511749 17955.97 576 561 139.9
D 10 118 568774 4062.94 576 561 139.9
D 7 80 96317 684.69 576 561 139.9

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