ASTROSAT CZTI

Data Quality Report

Orbit 37660

Creation date: 2024-06-27T21:42:46.739840
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/AS1A11_075T01_9000005342_37660cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37660cztM0_level2_quad_clean.evt
Size (bytes)442,402,56057,435,840
Size421.9 MB 54.8 MB
Events in quadrant A3,117,221340,119
Events in quadrant B2,925,744344,176
Events in quadrant C2,852,871343,091
Events in quadrant D4,116,620314,356

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125903
B0121602
C0117492
D0159352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5675300.528634%
B5675591.039648%
C5675180.317181%
D56753516.185022%

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 7259 5676 20 20 0.28% 0.35%
B 7258 5674 44 44 0.61% 0.78%
C 7258 5674 9 9 0.12% 0.16%
D 7258 5674 344 344 4.74% 6.06%

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 333719 2484.57 664 650 134.1
A 9 143 66359 490.16 664 650 134.1
A 13 248 62549 461.74 664 650 134.1
B 5 172 169086 1322.94 656 636 127.3
B 0 230 43191 334.21 656 636 127.3
B 5 200 38928 300.73 656 636 127.3
C 15 214 261405 1757.02 642 645 148.4
C 0 10 63491 423.46 642 645 148.4
C 14 254 10972 69.58 642 645 148.4
D 4 239 643810 4159.18 629 609 154.6
D 2 250 321629 2075.84 629 609 154.6
D 2 249 221870 1430.76 629 609 154.6

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