ASTROSAT CZTI

Data Quality Report

Orbit 33681

Creation date: 2024-06-27T20:51:26.497439
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_076T01_9000004810_33681cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33681cztM0_level2_quad_clean.evt
Size (bytes)621,195,84049,115,520
Size592.4 MB 46.8 MB
Events in quadrant A6,785,842256,059
Events in quadrant B3,667,670288,481
Events in quadrant C3,361,933292,176
Events in quadrant D4,638,035277,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238633
B0144502
C0134902
D0175412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5312226642.658133%
B53122384.480422%
C5312821.543675%
D53123035.704066%

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 7105 5312 748 748 10.53% 14.08%
B 7106 5313 165 165 2.32% 3.11%
C 7106 5313 67 67 0.94% 1.26%
D 7106 5313 297 297 4.18% 5.59%

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 15 169 4734864 52371.71 448 439 90.4
A 15 237 302472 3341.06 448 439 90.4
A 13 6 9005 94.76 448 439 90.4
B 5 172 631071 5051.72 655 640 124.8
B 4 170 263638 2107.43 655 640 124.8
B 0 213 33535 263.59 655 640 124.8
C 3 233 340465 2287.01 651 657 148.6
C 15 214 229426 1539.68 651 657 148.6
C 0 10 222731 1494.62 651 657 148.6
D 2 250 785996 4937.29 646 626 159.1
D 8 195 514089 3227.93 646 626 159.1
D 10 118 193636 1213.37 646 626 159.1

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