ASTROSAT CZTI

Data Quality Report

Orbit 37902

Creation date: 2024-06-27T21:45:56.297570
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/AS1T05_059T01_9000005354_37902cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37902cztM0_level2_quad_clean.evt
Size (bytes)548,778,24073,886,400
Size523.4 MB 70.5 MB
Events in quadrant A4,973,529437,419
Events in quadrant B3,440,246477,551
Events in quadrant C3,035,092482,375
Events in quadrant D4,778,845435,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183873
B0141012
C0126702
D0182642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A577388715.364628%
B57731923.325827%
C5773871.507015%
D57735699.856227%

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 7115 5774 876 876 12.31% 15.17%
B 7115 5774 135 135 1.90% 2.34%
C 7115 5774 84 84 1.18% 1.45%
D 7115 5774 462 462 6.49% 8.00%

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 2161239 17423.77 615 605 124.0
A 10 83 366736 2952.55 615 605 124.0
A 12 189 23195 182.17 615 605 124.0
B 5 172 456756 3717.38 635 618 122.7
B 4 232 82479 667.14 635 618 122.7
B 4 171 74006 598.09 635 618 122.7
C 0 10 294513 2021.47 621 625 145.4
C 15 214 241629 1657.71 621 625 145.4
C 14 254 58378 397.25 621 625 145.4
D 1 52 1039720 6436.62 590 575 161.4
D 12 233 387402 2396.06 590 575 161.4
D 2 249 262295 1621.13 590 575 161.4

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