ASTROSAT CZTI

Data Quality Report

Orbit 42461

Creation date: 2024-06-27T22:40:27.671583
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/AS1C07_001T10_9000005806_42461cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42461cztM0_level2_quad_clean.evt
Size (bytes)371,736,00088,361,280
Size354.5 MB 84.3 MB
Events in quadrant A2,952,636613,388
Events in quadrant B4,015,589599,370
Events in quadrant C2,459,662582,031
Events in quadrant D3,926,346515,133

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118132
B0155918
C0106152
D0152002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5221140.268148%
B52201733.314176%
C522030.057471%
D52204308.237548%

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 7343 5222 3 3 0.04% 0.06%
B 7342 5221 159 159 2.17% 3.05%
C 7342 5221 1 1 0.01% 0.02%
D 7342 5221 370 370 5.04% 7.09%

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 625067 5318.93 572 561 117.4
A 12 189 44245 372.06 572 561 117.4
A 2 79 24862 206.97 572 561 117.4
B 0 186 1512393 14246.84 555 538 106.1
B 5 172 143419 1346.43 555 538 106.1
B 15 35 94604 886.42 555 538 106.1
C 15 214 221721 1736.18 552 555 127.4
C 14 32 16203 122.84 552 555 127.4
C 9 54 12788 96.03 552 555 127.4
D 12 233 1030318 7789.19 543 527 132.2
D 1 52 301632 2277.52 543 527 132.2
D 2 16 137323 1034.71 543 527 132.2

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