ASTROSAT CZTI

Data Quality Report

Orbit 36055

Creation date: 2022-08-10T02:05:31.034686
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/AS1T04_069T01_9000005158_36055cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36055cztM0_level2_quad_clean.evt
Size (bytes)473,054,40062,769,600
Size451.1 MB 59.9 MB
Events in quadrant A2,531,369402,689
Events in quadrant B4,790,146377,948
Events in quadrant C2,998,063387,858
Events in quadrant D3,648,022361,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109553
B0177402
C0120432
D0144842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A529350.094464%
B529371313.470622%
C5293731.379180%
D52932795.271113%

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 7056 5294 0 0 0.00% 0.00%
B 7056 5294 516 516 7.31% 9.75%
C 7056 5294 63 63 0.89% 1.19%
D 7056 5294 260 260 3.68% 4.91%

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 167932 1355.49 606 593 123.5
A 13 6 12896 99.66 606 593 123.5
A 13 254 8281 62.27 606 593 123.5
B 5 236 1792022 16053.76 575 560 111.6
B 0 190 316622 2832.31 575 560 111.6
B 5 172 179392 1602.56 575 560 111.6
C 9 187 240133 1738.61 585 590 137.8
C 15 214 219518 1588.98 585 590 137.8
C 0 10 205458 1486.94 585 590 137.8
D 12 6 621362 4419.95 573 558 140.5
D 1 52 241467 1715.21 573 558 140.5
D 13 249 160564 1139.2 573 558 140.5

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