ASTROSAT CZTI

Data Quality Report

Orbit 37483

Creation date: 2024-06-27T21:40:36.737171
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_001T11_9000005326_37483cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37483cztM0_level2_quad_clean.evt
Size (bytes)494,887,680102,977,280
Size472.0 MB 98.2 MB
Events in quadrant A3,946,761674,288
Events in quadrant B3,476,073698,433
Events in quadrant C2,904,759698,085
Events in quadrant D4,263,995639,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152852
B0141561
C0122641
D0166741

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58364287.333790%
B58362474.232351%
C5836180.308430%
D58364667.984921%

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 7119 5837 413 413 5.80% 7.08%
B 7119 5837 201 201 2.82% 3.44%
C 7119 5837 17 17 0.24% 0.29%
D 7118 5836 448 448 6.29% 7.68%

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 15 190 1109123 8735.27 624 611 126.9
A 10 83 257100 2021.18 624 611 126.9
A 13 248 75194 587.73 624 611 126.9
B 5 172 706307 5797.75 631 614 121.7
B 0 229 63160 513.86 631 614 121.7
B 5 255 55996 455.0 631 614 121.7
C 15 214 249289 1701.89 628 633 146.1
C 14 254 169277 1154.26 628 633 146.1
C 0 10 26304 175.7 628 633 146.1
D 13 249 745417 5059.15 605 588 147.2
D 12 227 623116 4228.44 605 588 147.2
D 2 153 159388 1078.63 605 588 147.2

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