ASTROSAT CZTI

Data Quality Report

Orbit 37524

Creation date: 2024-06-27T21:41:05.525568
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_061T01_9000005330_37524cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37524cztM0_level2_quad_clean.evt
Size (bytes)473,258,88063,440,640
Size451.3 MB 60.5 MB
Events in quadrant A2,991,191389,910
Events in quadrant B3,733,809393,320
Events in quadrant C3,147,545395,947
Events in quadrant D4,094,054364,377

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123133
B0147192
C0127292
D0159522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5385631.169916%
B53854969.210771%
C53851953.621170%
D53855049.359331%

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 7087 5386 59 59 0.83% 1.10%
B 7087 5385 406 406 5.73% 7.54%
C 7087 5386 169 169 2.38% 3.14%
D 7087 5385 495 495 6.98% 9.19%

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 296331 2399.95 603 590 123.2
A 13 248 225892 1828.33 603 590 123.2
A 15 222 62320 500.94 603 590 123.2
B 5 172 840377 7538.31 580 565 111.4
B 0 229 422206 3784.73 580 565 111.4
B 0 213 44332 392.86 580 565 111.4
C 14 254 500322 3625.95 579 582 137.8
C 15 214 226871 1641.88 579 582 137.8
C 0 10 128056 924.91 579 582 137.8
D 12 227 822627 5854.1 570 554 140.4
D 2 249 342986 2438.51 570 554 140.4
D 12 233 234413 1665.34 570 554 140.4

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