ASTROSAT CZTI

Data Quality Report

Orbit 19853

Creation date: 2024-06-27T18:07:54.174204
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/AS1T03_118T01_9000002962_19853cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19853cztM0_level2_quad_clean.evt
Size (bytes)3,881,289,600407,960,640
Size3.6 GB 389.1 MB
Events in quadrant A55,908,3052,126,681
Events in quadrant B17,253,3392,701,753
Events in quadrant C17,047,8282,582,707
Events in quadrant D24,931,4752,484,549

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07280
B07280
C07280
D07280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01910966
B0738666
C0733546
D0988156

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A357621584644.309602%
B357626441.800794%
C357636721.879037%
D3576314404.026508%

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 38622 35759 13146 13146 34.04% 36.76%
B 38623 35764 24 24 0.06% 0.07%
C 38624 35766 0 0 0.00% 0.00%
D 38624 35765 852 852 2.21% 2.38%

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 14 238 39716504 56929.75 3484 3406 697.6
A 14 254 2702492 3869.21 3484 3406 697.6
A 9 143 46986 62.47 3484 3406 697.6
B 0 198 106135 123.98 4315 4204 822.2
B 12 111 103338 120.58 4315 4204 822.2
B 3 64 92966 107.96 4315 4204 822.2
C 14 238 643751 655.16 4173 4203 976.2
C 9 221 83484 81.22 4173 4203 976.2
C 13 61 28859 25.26 4173 4203 976.2
D 2 184 5602108 5475.35 4212 4087 1022.4
D 1 52 2610090 2548.9 4212 4087 1022.4
D 7 238 545065 529.12 4212 4087 1022.4

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