ASTROSAT CZTI

Data Quality Report

Orbit 36701

Creation date: 2024-06-27T21:30:29.800508
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/AS1C07_001T09_9000005236_36701cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36701cztM0_level2_quad_clean.evt
Size (bytes)523,656,000107,216,640
Size499.4 MB 102.2 MB
Events in quadrant A2,906,576742,261
Events in quadrant B3,106,933720,822
Events in quadrant C3,705,950714,036
Events in quadrant D5,739,175657,296

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125113
B0129872
C0147032
D0211452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5902210.355812%
B5902841.423246%
C59022073.507286%
D590379713.501609%

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 7186 5903 4 4 0.06% 0.07%
B 7186 5903 59 59 0.82% 1.00%
C 7186 5903 149 149 2.07% 2.52%
D 7187 5904 707 707 9.84% 11.97%

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 246141 1835.96 659 646 133.7
A 9 143 49297 363.84 659 646 133.7
A 13 6 24705 179.93 659 646 133.7
B 5 200 125625 1026.19 647 631 121.8
B 5 255 85381 695.79 647 631 121.8
B 0 189 62404 507.15 647 631 121.8
C 14 254 560687 3778.51 633 636 148.2
C 0 10 323205 2176.29 633 636 148.2
C 15 214 265482 1786.85 633 636 148.2
D 12 233 1890337 12595.45 607 591 150.0
D 14 52 484222 3223.48 607 591 150.0
D 13 171 362325 2411.01 607 591 150.0

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