ASTROSAT CZTI

Data Quality Report

Orbit 41269

Creation date: 2024-06-27T22:26:47.612003
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_052T04_9000005638_41269cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41269cztM0_level2_quad_clean.evt
Size (bytes)328,112,64089,251,200
Size312.9 MB 85.1 MB
Events in quadrant A3,067,948597,341
Events in quadrant B2,363,524620,100
Events in quadrant C2,923,121577,284
Events in quadrant D3,372,531532,375

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124563
B0108502
C0120472
D0136592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53671001.863238%
B536760.111794%
C53671633.037078%
D53672184.061860%

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 5368 69 69 0.96% 1.29%
B 7161 5368 1 1 0.01% 0.02%
C 7161 5368 155 155 2.16% 2.89%
D 7161 5368 201 201 2.81% 3.74%

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 505802 4222.02 586 573 119.7
A 13 248 272584 2273.1 586 573 119.7
A 2 79 10167 80.17 586 573 119.7
B 5 255 32524 282.08 586 569 113.3
B 12 111 14382 121.93 586 569 113.3
B 11 111 13335 112.69 586 569 113.3
C 0 10 452270 3324.5 575 578 135.9
C 15 214 226363 1661.8 575 578 135.9
C 13 61 3767 23.47 575 578 135.9
D 1 52 565653 4039.76 573 558 139.9
D 6 239 235096 1676.67 573 558 139.9
D 2 120 148467 1057.37 573 558 139.9

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