ASTROSAT CZTI

Data Quality Report

Orbit 40894

Creation date: 2024-06-27T22:21:51.786012
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_097T01_9000005574_40894cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40894cztM0_level2_quad_clean.evt
Size (bytes)356,535,36088,361,280
Size340.0 MB 84.3 MB
Events in quadrant A2,839,105600,916
Events in quadrant B3,377,505606,444
Events in quadrant C2,775,602586,090
Events in quadrant D3,810,546526,792

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114843
B0133542
C0112702
D0147872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5076170.334909%
B50762264.452325%
C5076671.319937%
D50761853.644602%

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 7079 5077 4 4 0.06% 0.08%
B 7079 5077 154 154 2.18% 3.03%
C 7079 5077 61 61 0.86% 1.20%
D 7079 5077 153 153 2.16% 3.01%

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 525680 4450.08 577 566 118.0
A 2 79 49853 417.68 577 566 118.0
A 12 189 13066 105.93 577 566 118.0
B 4 171 450536 4118.59 573 558 109.3
B 5 255 322548 2947.13 573 558 109.3
B 5 32 246851 2254.29 573 558 109.3
C 15 214 215080 1634.68 562 568 131.2
C 14 254 178160 1353.34 562 568 131.2
C 0 10 146155 1109.44 562 568 131.2
D 12 79 744871 5541.98 551 536 134.3
D 13 249 284298 2112.76 551 536 134.3
D 12 128 188120 1396.66 551 536 134.3

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