ASTROSAT CZTI

Data Quality Report

Orbit 40704

Creation date: 2024-06-27T22:19:22.608969
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/AS1A12_029T02_9000005558_40704cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40704cztM0_level2_quad_clean.evt
Size (bytes)381,070,08095,140,800
Size363.4 MB 90.7 MB
Events in quadrant A2,956,658645,986
Events in quadrant B2,790,159668,451
Events in quadrant C4,632,202626,071
Events in quadrant D3,287,645545,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122883
B0120532
C0175882
D0136482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5645120.212578%
B5645210.372011%
C56452895.119575%
D56454648.219663%

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 9110 5647 4 4 0.04% 0.07%
B 9110 5647 9 9 0.10% 0.16%
C 9109 5645 280 280 3.07% 4.96%
D 9110 5647 67 67 0.74% 1.19%

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 494946 3807.33 634 622 129.8
A 3 137 7151 50.29 634 622 129.8
A 13 254 6298 43.72 634 622 129.8
B 0 229 160379 1293.11 634 617 123.5
B 0 190 57210 458.06 634 617 123.5
B 3 112 35993 286.33 634 617 123.5
C 9 187 1967353 13599.32 618 622 144.6
C 15 214 240734 1660.3 618 622 144.6
C 5 10 8579 55.02 618 622 144.6
D 2 250 239878 1627.23 593 577 147.1
D 2 249 202491 1373.0 593 577 147.1
D 12 227 169685 1149.92 593 577 147.1

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