ASTROSAT CZTI

Data Quality Report

Orbit 36480

Creation date: 2022-06-27T22:29:04.281721
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_049T03_9000005208_36480cztM0_level2.evt modeM0/AS1A11_049T03_9000005208_36480cztM0_level2_quad_clean.evt
Size (bytes)430,214,40074,917,440
Size410.3 MB 71.4 MB
Events in quadrant A2,533,623500,526
Events in quadrant B3,273,145487,380
Events in quadrant C3,334,606463,192
Events in quadrant D3,543,246461,878

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107303
B0131442
C0130322
D0139152

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506940.078911%
B50691132.229237%
C50692414.754389%
D50692404.734662%

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 7161 5070 1 1 0.01% 0.02%
B 7161 5070 74 74 1.03% 1.46%
C 7161 5070 175 175 2.44% 3.45%
D 7161 5070 211 211 2.95% 4.16%

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 197106 1620.66 597 587 121.3
A 9 143 20863 167.21 597 587 121.3
A 13 254 9453 73.12 597 587 121.3
B 5 172 637324 5740.21 581 567 110.9
B 5 255 187321 1683.54 581 567 110.9
B 0 190 49231 438.69 581 567 110.9
C 0 10 534681 4189.19 548 551 127.5
C 0 207 443290 3472.41 548 551 127.5
C 15 214 216448 1693.28 548 551 127.5
D 13 249 701973 5110.85 561 546 137.2
D 10 118 294121 2139.09 561 546 137.2
D 2 250 126966 921.14 561 546 137.2

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