ASTROSAT CZTI

Data Quality Report

Orbit 37407

Creation date: 2024-06-27T21:39:37.090589
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/AS1A09_002T01_9000005322_37407cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37407cztM0_level2_quad_clean.evt
Size (bytes)426,830,40098,435,520
Size407.1 MB 93.9 MB
Events in quadrant A3,130,743646,909
Events in quadrant B2,671,799673,424
Events in quadrant C2,717,219681,353
Events in quadrant D4,066,531628,083

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123543
B0111032
C0109272
D0152942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50092535.050908%
B50091152.295867%
C5009420.838491%
D50093206.388501%

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 7072 5010 220 220 3.11% 4.39%
B 7072 5010 71 71 1.00% 1.42%
C 7072 5010 31 31 0.44% 0.62%
D 7072 5010 285 285 4.03% 5.69%

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 15 222 607138 5334.87 569 559 113.7
A 10 83 256329 2249.5 569 559 113.7
A 5 168 23046 197.77 569 559 113.7
B 0 229 205485 1884.39 575 561 108.7
B 5 255 101088 924.4 575 561 108.7
B 5 172 69063 629.91 575 561 108.7
C 15 214 217424 1662.5 573 579 130.4
C 0 10 109063 831.72 573 579 130.4
C 14 254 40884 309.01 573 579 130.4
D 12 227 1062822 7676.12 568 554 138.4
D 12 235 161449 1162.65 568 554 138.4
D 1 52 149985 1079.81 568 554 138.4

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